When performing magic at school to friends and people I don't know, I always find myself having trouble knowing when to continue, when to show a trick again, and how to stop. When I finish showing one person or group of people something, they call other people to watch and ask me to do the same effect again(anyone else get this?). Should I repeat a trick for this "new audience?" Also, how do I transition between effects and end a performance? I always find myself in that awkward position where I've performed everything I wanted to show them and want to end it without being awkward.