Hand shaking in magic.

[TheSecretFire]

Like Fin said, adapt the mindset that laymen generally expect a magician to do magic, while magicians generally expect cool tricks.

So when performing in front of magicians, don't let them test you- just test yourself. And since magicians usually know what's going on, you can do really bold stuff (if your intention is to fool them), like doing tabled doubles, or spreading the invisible deck on the table (after finding their named card), or put a double or gimmicked card in their palm, etc.

As for the shakes, I used to get those so bad that I could barely hold the deck. So here's what I did to get rid of them faster: do a very fast set of 30-40 pushups then rehearse the routine while forcing your body to relax (or pullups or some other exercise that will make your arms and hands shake). This will help you to have greater control over your heartrate, so when you perform, getting your body to relax will be considerably easier.

Hope this helps!