How do I create my own Roblox shirt?

How do I create my own Roblox shirt? To make a t-shirt, create a square image (such as 512×512 pixels) and then upload it to Roblox using the Asset Manager to test in your own experience.

To make a t-shirt, create a square image (such as 512×512 pixels) and then upload it to Roblox using the Asset Manager to test in your own experience.