How to upload a shirt design to the Roblox Store? To upload a shirt design to the Roblox Store, you will need to have a Roblox account and be a member of the Builder's Club.

Testing a shirt in Roblox is a crucial step in the design process, ensuring that your creation looks great in the game. Here's a step-by-step guide to effectively test your Roblox shirt designs: ...

Much like most things on Roblox, you will be making this yourself from scratch, so you'll need to design a t-shirt in an image and then upload it to Roblox.

Then you have to create your own design on a blank canvas and make sure the resolution should be 128x128 pixels. After you’re done editing it, export the image file and upload it to Roblox.