Intro: How to Perform a Professional Magic Trick . . . in 30 Seconds!
Difficulty Level - 1 | 2 | 3 | 4 | 5
I'm sorry about it being a bit fast, but you can pause it to read the words at the bottom to understand what's going on, if you don't get it. It explains everything at the bottom.
I have recently taken an interest in magic tricks (a.k.a. illusions), and I found this contest, and had an idea to teach it to the world, er, Instructables Community.
Have fun with this great illusion!