Ever wondered why during levitation, his back is against us? The catch is to use one foot to push yourself upwards while maintaining your position with the other foot. With the help of the shade of your other foot, your shoes, your trousers and the direction that you are facing. You can make it seems like you are off the ground!
This way of levitating is known as "Balducci Levitation".
Basically, it is a technique to create the illusion of floating while we are actually tiptoe-ing on one foot.
Theses series of pictures shows the technique for balducci levitation, some claims to be the same method that David Blaine used.
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*Diagrams taken from shepherdfj.tripod.com/puremagic/levitate.html
