How to Make T-Shirts in ROBLOX T-Shirts are the easiest clothing to make in ROBLOX. Create an image that’s ideally 512x512 pixels and then upload it to ROBLOX via the Asset Manager in ROBLOX Studio.

To become a Roblox shirt tester, you need to have access to Roblox's shirt creation tools, which are available to all users. However, to sell your designs, a premium membership is required.