“The success of your presentation will be judged not by the knowledge you send but by what the listener receives.” ~ Lilly Walters
Nervous ticks make you look less confident and make your message seem less credible. If you fiddle with a ring or watch while speaking, simply remove the objects. Likewise, empty change from your pockets. You could try to remember not to fidget with these objects, but you have enough to remember when you are presenting. Remove the distractions, remove the worry.