THE EFFECT: A sheet of paper is torn into pieces then folded and finally crumpled in your hand. You open your hands, take out the crumpled paper, then you unfold it. Magically the paper is restored!
THE EFFECT: You need two pieces of duplicate paper. Crumple one of them, place it in your left hand and make sure it's hidden. Do this all before the trick begins.
Start off the trick showing the piece of paper on your right and holding the second duplicate paper in your left hand. Tear the first paper, crumple it and place it into your left hand. Then act as if you are crumpling the paper while switching the first paper with the second piece of paper.
Bring out the second piece of paper hiding the first paper saying "watch!" and as the spectator is paying attention looking at the crumpled paper, place the first torn paper in your pocket or somewhere else you can throw it away. Unfold the paper to show that it has restored itself.
Practice to make it look more natural.