Everyone needs a red team. A red team is a group of people who's goal is to poke holes in your trick. They analyze every aspect of the performance and openly critique it. This is the beginning of red teams. If you have a trick that you want people to try and figure out, (particularly a visual one), post it here and take in the suggestions to tweak it to be the best.
Heres one to start with:
http://instagram.com/p/ftBKOtPu1e/
Heres one to start with:
http://instagram.com/p/ftBKOtPu1e/