Dr. LaMarr Darnell Shields, CEO of The Cambio Group, an educational consulting firm that services districts nationwide -- gives us the lowdown on top-notch preparation for exemplary public speaking appearances and our presentations. From technology fails to taking care of your voice prior to your event -- Dr. Shields takes us into the spotlight with tools to ensure our messages and brands make a lasting impression on our audiences. You'll want to take notes, I promise!