don't worry about I am very young in this but I know quite a bit about the history of it. even the famous slieght of hand master max malini got a diamond misplaced during his trick, a comedian had taken it, (every one thoguh he made it apear or pickpocketed it any way) so he created a long lie to get it back.
well, if you're talking about flubbing a trick, that can happen even after a lot of practice. In that case, to paraphrase Darwin Ortiz, *briefly* apologize and move on. "Sorry about that, but let me show you this, it's even better...."
If you flub your closer, then have an emergency backup closer ready.
If you flub your closer, and your backup...you probably need to practice more before performing.
If, on the other hand, you're talking about a heckler messing up your trick. You may need to consider your audience manipulation skills.
1. Don't pick uncooperative specs.
2. If a heckler is trying to wreck your trick -- ignore him thus denying him the attention.
3. If a hecker is trying to spoil the method, one of a few possibilities are the case:
a. You either got caught and need more practice. Consider that the heckler is helping you improve.
b. The heckler has the method all wrong. Just go on and finish your routine. Then restructure your routine later to eliminate the possibility of the method described.
c. The heckler has the method right, but not completely and you will end up revealing that when you climax the trick. In that case, again, ignore and then go back and practice more so your method does not become exposed.
Some may disagree, but I appreciate what Darwin Ortiz says regarding the person who catches you out. If you're caught because you flash, or flub, or for whatever reason give away the method. The spec who sees and points that out is NOT a heckler. They are just a spec who caught you. In that case, take it as feedback and then go pull out your close up mat and get in front of your mirror and practice, practice, practice.