Step 1: Lots and Lots of Glue
I purchased about 1000 bills of Motion Picture Money on eBay. I already had two hot glue guns, and bought a few packs of glue sticks and started gluing. I began with the shirt, starting at the bottom and working my way up. I decided to lay it out like a tile floor, but more random. I glued down a good base of bills, just to cover the shirt, then I added more bills, as needed, to fill in gaps.