Don't namby-pamby into your introduction - instead, stride confidently to center
stage, pause, then start with a bang. Give a startling fact/statistic/quote.
Consider this: if the first words out of your mouth are "Imagine this," they'll be
exactly where you want them, right? Needless to say, your talk, from the very first phrase, is guaranteed to meet their needs, to exceed their expectations. It’s all about them, not about you.