Most say there aren’t short cuts, but they are full of prunes. Some say you must be born with the gift of public speaking, baloney. Some may seem gifted more than others at first blush, but the gift was paid for one way or another. The bottom line, barring a legitimate phobia, just about anybody can wow an audience most of the time. It helps if you are actually at least a borderline expert of course, but even that is optional.