There are times when tricks don't work, something goes wrong. It's inevitable. And we all know it's unprofessional and "unmagical" (made up word) to simply say "oops" or "wait, let me try this again." How do you get out of a jam? How do you save your performance?
Example: If I've lost a chosen card, I'll ask for the name of the card and cut it to the top while feigning disbelief. Double lift the top card and swear that I thought it was this one. Insert double into deck and do the impulse change to magically change it to selected card.
What do you do?