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. Once you have that, you can follow these steps: ...

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. From there, just select it to wear and ...

Image format .png, .jpg, .tga, or .bmp can be uploaded to Roblox. The next step is to upload it to the platform. Head over to the Roblox Studio and select the Asset Manager option in the View tab.

Testing the Design: After uploading, it's time to test how your shirt looks on an avatar. You can do this by going to your inventory, finding the shirt, and selecting 'Wear'.

Upload and save your new clothes Your next step is to upload your shirt by selecting it on the Roblox create page. Hit Choose file and then Upload.