Thanks to jreks for the inspiration for this card. I took the tie one step further and used 3/8" grosgrain ribbon to create a tie. I actually tied the tie using the Pratt knot (http://www.neckties.com/knots.php) and put it around the collar.
I made my own "to scale" diagrams and set of instructions to fold the origami shirt, which you can get a copy of here: Forums at Splitcoaststampers