Bigger audiences want you to be bigger. It’s almost as simple as it sounds; the bigger the audience, the more the following points are true.
Here's a rule of thumb assuming that your audience is neutral about your topic. Only 10 per cent of your impact is in your content - 90 per cent is in how you deliver the content. Much of that 90 per cent is in your body language. if you ignore that, you're neglecting a fountain of natural, built-in credibility. Try this mental exercise: