Often times we find ourselves getting into poor public speaking habits that non-verbally convey messages we don't want to have sent. The axiom of communication states that You cannot NOT communicate! If you are dead, you are communicating to the world "I am dead". My point? Communication is inescapable so own it. Here are some tips on habits to avoid!
*Pro Tip: Try recording yourself and then watching it. You'll be surprised with what you see. When you rehearse in front of a mirror, you adjust yourself real-time. When you use a recording, you will see what the audience sees.