Companies and organizations who hire you do not want to book a neophyte. You need to convince them that you have the experience and expertise to earn the right to speak to their employees or members. Testimonials from people who have heard you speak in the past are powerful selling tools. If you are just getting started, offer to give free speeches to local organizations in exchange for reference letters. Record your presentations and post clips on Facebook and your website to showcase your knowledge and delivery style. As your experience grows, upgrade them with more well-known references. Meeting planners will draw comfort knowing that others have heard you and enjoyed your program.