I'm sure this has been done before. This is a great way to use old 20 x 24 aluminum frames. This is just a piece of foamcore cut just so it fits inside the frame. Then (with out cutting the shirt) put the foamcore inside the shirt and position the art how you want it to look. Next just push the foamcore inside the frame. Pull the shirt from behind a little to make it nice and tight then tape the remaining shirt to the back. I really like how simple this is. You can easily switch out shirts when you do better work. It only takes a few minutes.