ChatGPT vs Skinomics for Roblox shirts: why an AI picture isn't a Roblox template

Ask ChatGPT for "a Roblox shirt with a neon dragon across the chest" and you'll get an image that looks great on screen. Upload that image to Roblox as a classic shirt, though, and the result can look nothing like what you pictured: parts of the dragon land on the wrong faces of the avatar, get chopped at the edges, or turn up on your back.

That isn't because the AI did a bad job. A general image generator makes a picture, and a Roblox classic shirt isn't really a picture. It's a template: a flat map of panels that Roblox folds around your avatar's torso and arms, where every part of the design has to sit in the right spot.

This post is for anyone who has tried, or is about to try, ChatGPT, Midjourney or another AI image tool to make Roblox clothes. We'll show what the template looks like, why an ordinary AI image wraps wrongly, where general AI tools genuinely help, and how Skinomics differs by generating the template layout itself. Facts were checked in October 2026, and any prices are US prices that vary by country.

The short answer

A general AI image generator gives you an image. Roblox needs that image arranged on the 585×559 classic clothing template, with the chest art in the front panel, the back art in the back panel and the sleeves in the arm panels. Skinomics generates directly onto that layout, shows the result on a 3D avatar and lets you fix details in an editor before you upload. With ChatGPT, Midjourney and similar tools, the output is a picture that isn't laid out on the template, and there's no avatar preview to catch problems.

What a Roblox shirt template actually looks like

Roblox's classic shirt and pants templates are 585×559 pixels, saved as PNG or JPG. Inside that canvas, the design is split into panels that Roblox folds into boxes around the avatar's body parts:

• Front and back: 128×128 each
• Torso and limb sides: 64×128
• Up and down (top and bottom of the torso): 128×64
• Limb tops and bottoms: 64×64

Roblox reads the image by position. Whatever sits inside the front panel becomes your chest; whatever sits in the arm panels wraps around your arms. Pants use the same 585×559 size, with panels for the legs. Classic T-shirts are the exception: a single square image, for example 512×512, shown on the front of the torso.

One more caveat from Roblox's own documentation: many user-made avatar bodies on the Marketplace don't support 2D classic clothing at all. Whatever tool you use, test on the body you actually wear.

Why an AI picture wraps wrongly

Say your AI image is one centered illustration on a square canvas. Roblox has no idea the dragon is meant for the chest. If you squeeze the image to 585×559 and upload it, Roblox still cuts it along its panel lines. Part of the dragon becomes the front of the torso, a slice of it lands on a sleeve, and the corners of the picture end up on the top, the bottom or the back. On the avatar, it looks scrambled.

Even if you ask for "a Roblox shirt template" in your prompt, what you get back is still a generated picture rather than artwork placed on Roblox's panel grid, so you'd have to check every panel yourself. And there's no 3D avatar in a chat window to spot the problem before you've paid 80 Robux to upload.

What ChatGPT and Midjourney are genuinely good at

None of this means general AI tools are useless for Roblox fashion. They're very handy at the start of the process:

• Mood boards. Try out styles such as streetwear, cyberpunk or Y2K, and test color palettes before you commit to anything.
• Single graphics. An emblem, a crest or a lettering idea you then place on one panel yourself.
• Prompt ideas. Ask a chatbot for ten outfit descriptions, then take your favorite into a template-aware tool.

If you're comfortable in an image editor, you can also paste AI art onto Roblox's template in Photopea or GIMP and line it up panel by panel. It takes effort, but it gives you complete control.

How Skinomics handles the layout

Skinomics generates classic shirts and pants directly on the 585×559 layout. You type or speak a description, pick Shirt or Pants and send. The result opens on a 3D R15 blocky avatar, where you can drag to rotate, pinch to zoom and adjust the lighting to check the front, back and sleeves.

If a detail is off, the template editor shows a guide overlay of the panels, so you always know which part of the body you're drawing on. You get a pen, marker and eraser, 16 sticker packs, simple shapes, layers and image import. That last one is where your ChatGPT or Midjourney art fits in: import a graphic you have the rights to and position it on the front panel. Pro subscribers can also attach a reference image to guide a generation.

Skinomics isn't a general image generator, though. It won't make posters, thumbnails or 3D items, it only does classic shirts and pants, it runs on iPhone and iPad, and the interface is in English.

Side by side: Skinomics vs general AI image generators

What it costs

Skinomics is free to download. Each AI generation needs either one short rewarded ad or a Skinomics Pro subscription at $5.99 a month or $25.99 a year, and reference images are a Pro feature. General image generators each have their own free and paid options that change by tool and plan, so we won't try to list them here.

Roblox's fee is the same whatever made the design: 80 Robux per classic shirt or pants upload. A shirt that wraps wrongly cost exactly as much to upload as one that looks right, which is the best argument for checking it in 3D first.

Use both: from mood board to wearable shirt

1. Optional: brainstorm a look in ChatGPT or Midjourney and settle on one direction.
2. In Skinomics, describe it in a sentence, for example "black bomber jacket with a gold dragon on the back", pick Shirt and send (one ad, or Pro).
3. Turn the 3D avatar around and check every side.
4. If you made a logo you own, import it in the editor and place it on the front panel; add stickers or shapes if you like.
5. Sign in with Roblox and upload from the app, or export the PNG.

Want the full picture first? See how Skinomics works, screen by screen.

A word on rights: AI doesn't change Roblox's rules. Brand logos, characters you don't own and Roblox branding all break the Marketplace rules, and the person who uploads is responsible for the item, whichever generator drew it.

Which should you use?

Stick with a general image generator if you:

• are brainstorming, or need art for something other than clothing;
• work on a computer and don't mind placing art on the template yourself;
• already know the panel layout well.

Use Skinomics if you:

• want a classic shirt or pants you can actually wear, without learning the panel grid;
• are on an iPhone or iPad;
• want to see the design on a 3D avatar before paying the upload fee.

Plenty of creators will use both: one for the idea, the other for the wearable version.

Verdict

ChatGPT and Midjourney are great at making pictures, but for a Roblox shirt, a picture is only the starting point. The work that decides whether it looks right on your avatar is the layout, and that's the part Skinomics takes care of, then lets you check in 3D. Keep the image tools for inspiration; build the wearable version on the template.

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This article is written by the Skinomics team. Facts checked in October 2026; prices are US prices and may vary by country. Skinomics is not affiliated with Roblox Corporation. Roblox is a trademark of Roblox Corporation; other names belong to their owners.