A shirt template (Image via Roblox) Right-click the image in the pop-up window and select Save image as. Notice how the parts are "folded up" and wrapped around a character's body, limbs, and legs ...

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.