I was recently watching David Williamson's Penguin lecture and he mentions that the best way to impress laymen and magicians is to simply fly under the radar. He gave a really good example of how when Bill Malone moved to Florida after spending years under the wings of Ed Marlo. He would go to lectures and pretty much fumble the cards and play up this completely unskilled guy that just really loved magic. Then he would go on to something like the Eleven card trick and use a Bottom Deal in it and completely fry everybody watching, because they never suspected that he could do anything. And it's a really good point, it's also pretty much why a lot of kids tend to get busted. Because you end up show boating everything you know and now everybody knows that you are extremely skilled. So they end up watching you like a hawk. Remember the old saying "Only give them 40%".