Because I really like this effect. I certainly did not come up with this idea and I got all instructions from Jane Dunnewold's latest book. If you give it a try, let me know and show us some photos. If you have any questions, don't hesitate to ask.
permutation (pur'myoo-ta'shen) noun 1. A complete change; a transformation 2. The act of altering a given set of objects in a group 3. Complete change in character or condition