Keep the Secret a Secret
The fun of magic is mystifying your audience. If you tell how a trick is done, the mystery and excitement will be gone.
Do the Trick Only Once
The first time you show an audience a trick they will be surprised at what happens. If you show it a second time they will know what to expect and be more likely to figure out how you did the trick.
Practice Before You Perform
Make sure you are comfortable with the trick before you perform it for an audience. Spend time practicing each part of the trick. When you practice it is important to say what you are doing, just like when you perform the trick. Remember to be dramatic and excited. You are putting on a show!