Every week as SmallBizLady, I conduct interviews with experts on my Twitter talk show #SmallBizChat. The show takes place every Wednesday on Twitter from 8-9 pm ET.  This is excerpted from my recent interview with David Newman, CSP. David is a Certified Speaking Professional, marketing expert, speaker, and founder of Do It! Marketing, a strategy and done-for-you services firm that specializes in working with executives and entrepreneurs who want to speak more profitably. He’s the creator of the Speaker Profit Formula…