Go to the Roblox Studio and access the asset manager through the view tab. A T-shirt is the simplest design to create but fairly basic. Roblox utilizes images in .png, .jpg, .tga, or .bmp format.

You need an image of your Roblox character saved as "reference.png" in this directory, replacing the one showing mine. If you're unsure what it should look like, check the example image in the ...