The trick is...

Easy Does It! Small-Scale Tricks to Dazzle Your Audience: "Whether you've been practicing magic for two days, two years, or twenty, the only effective magic trick is one that actually 'fools' your audience. This ability to create a good illusion depends in huge part on one thing: rehearsing!
Let's face it-no matter how great a trick is or how useful a magic prop is, you won't surprise or delight anyone unless it's performed smoothly and confidently. What if you drop your deck of cards or accidentally mishandle a coin? The illusion will be destroyed, and you'll have lost your audience's trust."

...even if I do say so myself!