Custom Apparel | Artwork Preparation Guide
How to Prepare Artwork for Custom Event Shirts: Color, Sizing & Print Placement
The artwork stage is where most custom shirt orders slow down — and where most rush orders lose time they cannot recover. This guide covers what production-ready artwork actually means, what happens when artwork needs preparation, how color is handled for garment printing, and what decisions about sizing and placement need to be made before production can begin.
When an organization places a custom shirt order, artwork is usually the last thing they think about and the first thing that can delay production. The design exists — a logo, an event mark, sponsor graphics, a combination of elements — but whether it exists in a form that can actually go to print is a different question.
Understanding what production-ready artwork means, and what needs to happen when it is not, gives buyers a clearer picture of the production timeline — and more ability to protect it when a deadline is involved.
What Production-Ready Artwork Actually Means
Production-ready artwork is a file that can move directly to the production process without significant rework. For custom garment decoration, that generally means:
Production-Ready Artwork Checklist
- High resolution — 300 DPI or higher at the intended print size
- Correct file format — vector (AI, EPS, PDF with outlined fonts) or high-resolution raster (PSD, PNG)
- Transparent background where the design should print without a background box
- Correct colors for the print method being used
- Clearly separated design elements if multiple placements are needed
- No fonts requiring separate font files — all text outlined or embedded
- Print dimensions known or specified for each placement location
Artwork that does not meet these criteria is not unusable — it is artwork that requires preparation before production can begin. That preparation takes time.
What Artwork Preparation Involves
Artwork preparation is the process of taking supplied files and bringing them to a state where production can proceed. Depending on the condition of the supplied artwork, preparation may include some or all of the following.
Background Removal
Removing white or unwanted backgrounds from artwork so the design prints without a background rectangle around it. A common issue with logos sourced from websites or presentations.
Color Adaptation
Adjusting artwork colors for the specific garment color being used, or converting multi-color artwork to a consistent color treatment. This was a key part of the Stroke of Hope artwork preparation — achieving a cream tone that would read correctly on Blue Jean fabric.
Resolution Correction
Addressing artwork that was created or exported at too low a resolution for print. Low-resolution artwork cannot simply be enlarged — it must be recreated or redrawn, which takes significantly more time than adjusting a correctly prepared file.
Element Separation
Isolating individual artwork elements when different components need to be treated differently — for example, separating a left-chest mark from a full-back graphic, or isolating sponsor logos within a composite event artwork file.
Color Treatment — Getting the Right Result on the Garment
Color is where artwork preparation requires the most attention on event garments — particularly when the garment color is not white or black, and when the desired ink color needs to read in a specific way against the fabric.
On the Stroke of Hope Rally for Recovery project, the artwork required a cream/off-white color treatment on Blue Jean Comfort Colors garments. The challenge was not simply printing white — it was achieving a specific cream tone that would read warmly and correctly against the Blue Jean dye. iHeartCustoms worked through the color preparation, produced a proof showing the treatment on the actual garment color, and submitted it for review before production.
Client Proof Response — Stroke of Hope
"That cream is really nice against the blue Jean."
The proof stage is where color treatment gets confirmed before shirts are produced. Approving a proof without reviewing the color on the actual garment type can result in a finished product that reads differently than expected. For non-white garments in particular, reviewing a physical proof or a proof produced against the correct garment color background is the most reliable way to confirm the color result before committing the full run.
Print Sizing — The Dimension Decisions Before Production
Before production begins, print dimensions need to be established for each decoration location. These decisions interact with the artwork proportions, the garment size run, and the visual effect being sought on the finished shirt.
The left-chest and full-back are the two most common locations on event shirts, and they serve different visual functions. The left-chest mark is typically a refined, positioned logo in the 3–4 inch range. The back graphic carries the event information, sponsor content, or full branded artwork and can extend significantly larger.
On mixed size runs, left-chest dimensions may need to adjust across garment sizes. A dimension that reads correctly on a Large can appear oversized on a Small — a situation iHeartCustoms encountered and addressed on the Stroke of Hope production run, where Small and Medium impressions were reduced from approximately 4 inches to approximately 3.5 inches after a physical production review. The left-chest sizing question is covered in more detail in the companion guide: What Size Should a Left-Chest Logo Be on a T-Shirt?
Placement — Confirming Position Before the Run
Placement refers to where on the garment the impression is positioned. Standard placements for event shirts include left chest, full back, and occasionally sleeve or right chest. Each location has a standard positioning reference, but confirming placement on an actual physical garment — particularly for front placements where the impression interacts with neckline, seams, and garment width — is more reliable than assuming the digital mockup reflects the physical result.
For event orders where every shirt in the run needs to look consistent, placement confirmation before the full run begins protects against a placement decision that looked correct in a mockup but reads differently on the physical garment.
Why Artwork Preparation Matters More Under a Deadline
Artwork preparation takes the same amount of time regardless of the event date. Background removal, color work, resolution correction, element separation, and proofing all require the hours they require. The difference is what those hours cost relative to the available window.
On a standard timeline, preparation is factored into a comfortable production window. On a rush order, every hour of artwork preparation is an hour of production time that cannot run simultaneously. Submitting production-ready artwork — or flagging artwork status clearly at first contact — is the most direct way to protect the available production time on a deadline-driven order.
On Rush Orders Specifically
Submitting incomplete or low-quality artwork with a same-week deadline does not stop the artwork preparation process from happening — it just means it has to happen inside the production window instead of before it. The earlier artwork issues are identified and flagged, the more room the production team has to address them.
What to Submit — Artwork Checklist for Custom Event Shirts
Send All of This With Your Artwork Submission
- Artwork file in the highest available quality — vector preferred, high-resolution PNG or PSD if vector is not available
- Intended print locations — left chest, full back, sleeve, or other
- Desired dimensions for each location — or a note that sizing guidance is needed
- Garment color — so color treatment can be evaluated against the actual fabric color
- Color notes — any specific color requirements or color match direction
- Background intent — whether any backgrounds in the file are intentional or should be removed
- Size breakdown — all sizes in the order, so any size-specific print adjustments can be identified upfront
- Artwork status — a note on whether the file is production-ready or whether preparation assistance is needed
Ready to Order Custom Event Shirts in Orlando?
Text iHeartCustoms at (407) 808-9631 with your event date, garment requirements, and artwork. Rush production available for qualifying orders.
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Custom Shirts for Events, Organizations & Rush Orders
Text iHeartCustoms with your event date, garment type, size breakdown, and artwork. Rush production available for qualifying orders.
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Frequently Asked Questions
What does production-ready artwork mean for custom t-shirts?
Production-ready artwork is a file prepared to go directly to print without requiring significant rework. For custom t-shirts, this typically means a high-resolution file (300 DPI or higher at print size), correct colors for the print method being used, a transparent background where the design should not include a background box, clearly separated elements, and accurate dimensions. Artwork that is not production-ready requires preparation time — which compresses the available window on a rush order and can affect whether the deadline is achievable.
What happens if my artwork isn't production-ready when I submit a shirt order?
iHeartCustoms reviews submitted artwork and assists with preparation where needed. On the Stroke of Hope Rally for Recovery project, the supplied artwork required adaptation and color treatment before production could begin. iHeartCustoms evaluated the graphic elements, worked through the color treatment, and produced a proof for client approval before proceeding. Artwork preparation adds time — the earlier artwork is submitted, the more room exists for any necessary adjustments, particularly on deadline-driven orders.
How should colors be specified for custom event shirt artwork?
Colors for custom shirt printing are typically specified by the print method in use. For DTF (direct-to-film) printing, artwork is generally prepared in full RGB or CMYK color. If a specific color match is critical — a brand color or a specific tone that needs to read consistently on the garment — the color discussion should happen before production begins and ideally be reviewed in the proof stage on the actual garment material. On the Stroke of Hope project, achieving a specific cream tone on Blue Jean fabric was part of the production preparation process, and the color treatment was reviewed and approved at the proof stage.
Do I need to remove the background from my artwork before submitting it for shirt printing?
For most shirt decoration methods, yes — artwork should have a transparent background rather than a white or colored background, unless the white or colored background is intentionally part of the design. A white background that is not part of the intended design will typically print as a white rectangle around the artwork. iHeartCustoms reviews artwork for background issues during the evaluation process and will flag any concerns before production begins.
Should print dimensions be the same for every shirt size in an event order?
Not necessarily. A single print dimension applied across a full size run can produce an impression that reads correctly on larger garments but appears oversized on smaller ones. On the Stroke of Hope project, an approximately 4-inch left-chest impression was identified as oversized on Small and Medium garments during production review. The impression was adjusted to approximately 3.5 inches on those sizes, with client approval, before the full run was completed. For mixed size runs, reviewing print sizing across the range — particularly on smaller garments — is part of responsible production practice.
What file format should I send for custom t-shirt artwork?
Vector files (AI, EPS, SVG, or PDF with outlined fonts) are generally preferred for logos, text-based designs, and any artwork that may need to be scaled. High-resolution raster files (PSD or PNG at 300 DPI or higher at print size) are acceptable for photographic or complex graphic artwork. Avoid submitting artwork from social media exports, web screenshots, or low-resolution sources — these typically cannot be enlarged to print size without significant quality loss.
Why does artwork preparation take longer under a deadline?
Artwork preparation — background removal, color adjustment, resolution correction, element separation, proofing — takes the same amount of time regardless of the event deadline. On a standard timeline, preparation time is factored into a comfortable production window. On a rush order, preparation time compresses the window available for actual production. Submitting production-ready artwork, or flagging artwork issues at first contact, is the most effective way to protect the available production time on a deadline-driven order.
What is the proofing step in custom shirt production?
Proofing is the review step between artwork preparation and production, where the client confirms that the prepared design — colors, layout, sizing, and placement — matches the intended result before shirts are printed. On the Stroke of Hope project, iHeartCustoms produced a proof showing the cream artwork treatment against the Blue Jean garment color, and received client approval before production began. Approving a proof promptly keeps the production timeline on track. Delays in proof review directly delay production start.
What information should I include when submitting artwork for a custom event shirt order?
When submitting artwork, include: the artwork file in the highest quality format available, the intended print locations (left chest, full back, sleeve, or other), the desired dimensions for each print location if known, the garment color you have selected, any color notes or color match requirements, and a note on whether any elements should be excluded or adjusted. If the artwork has multiple versions or elements, indicate which version is intended for each location. The more clearly the artwork is specified at submission, the fewer clarification rounds are needed before production can begin.
