Let me bounce my current list of displaying CONFIDENCE back to you:
(1) Make decisions without dictating (don't 'pass the buck' to someone else). (2) Demonstrate an opinion on key issues (stand up for your beliefs and wants). (3) Maintain good posture and walk proud. (4) Dress sharp and clean (e.g. Men's Health magazine ads), including really good shoes. (5) Enunciate and project your voice. (6) Smile (7) Maintain good personal hygiene (8) Don't ask for help - ask for advice. (9) Socialize with everyone.