A random list of communication pointers:
Motion creates emotion; so get loose or strike a pose
Occupy space (and be aware of psychological space)
Don’t be a doormat
Non-verbal communication is underrated
Remember the 60/40 rule: Rejection is 60% emotional baggage and 40% how you respond to it
Pause often and speak slowly (not softly)
Use strong verbs and short sentences
Say ‘sorry,’ when you need to, but don’t apologize for being yourself
When talking to a group, talk to each person (not everyone at once)
Ask open ended questions
Talk about your experiences or feelings, or (better yet) talk about theirs
(Don't talk about the weather unless you have to)
Be positive and smile often (nothing is more awkward than a blank face)
People like it when you use their name
They also like it say hi and use (appropriate) eye contact
Enjoy yourself (that's the point isn't it?)