I like the effect, it could be considered a classic plot and I like classic plots.
Your Character is interesting. Your attire reminds me of the characters portrayed by Barry and Stuart. They are very funny, but it's dark humor. Your humor wasn't dark, but then again, the presentation of the trick didn't have much of an anchor for dark humor. I think that this may work, but it depends on the context. If this is one comedic moment in the middle of a show with an appropriate range of different moods I think that it might work, after all, there can be comedy in a horror film and vice versa. The key is finding balance. Of course, I could be completely wrong here, and if that's the case, it certainly wouldn't be the first time.
Your music also seems to lend itself to a character that uses more dark humor, or no humor at all. I can see this music with a Edgar Alan Poe type of mysterious presentation for a trick. I can also see the current presentation with non-mysterious music. Again, it depends partly on the rest of your show.
As far as the "flash" that was mentioned in one of the earlier replies goes, I only noticed it because I was looking for it, and because I knew what to look for. Most non-magicians probably wouldn't notice, or they'd dismiss it as having seen the wrong thing the first time. The "flash" was a minor discrepancy that probably doesn't matter unless you're performing for magicians.
On a different note, I really enjoyed your audience interaction. I've seen a number of performers who are stuck on their script and don't react to what happens around them. You weren't stuck on your script, which made the performance more fun to watch.
