I've known Deb Sofield for years. A professional speaking coach, she's worn a lot of hats in the Upstate South Carolina, including as a business and community leader. She chairs the Water and Sewer board that serves much of Greenville County and has been a leader in the Southeastern Institute for Women in Politics.
She's also got a free monthly newsletter that focuses upon developing professional speaking skills: Speak Without Fear. As someone who has taught speech at the college level, I'll say it's a great resource that you should check out.