It was really very easy but had a nice look about it. Stamp image on white tissue paper, then crumple it into a ball. The smaller the ball, the more wrinkles you get. Mine was the size of a marble, for comparison's sake.
I posted a card in my gallery that I made at the crop this weekend. It was a case from Pinterest where I saw the technique.
http://stamp-shack.com/photopost/sho...x-silk&cat=all