Here are 11 speaker tips from frequent TED coach Gina Barnett (excerpted from TED blog):

1. Start drinking water 15 minutes before you start talking.
2. Psych yourself up, not out.
3. Use your body’s nervous energy for good.
4. Focus on your breath when you feel the adrenaline.
5. Beware of repetitive motion.
6. Think about how to use movement wisely.
7. Use your tone to strengthen your words.
8. Give people a chance to adjust to your accent.
9. Focus on something outside of yourself.
10. Remember that the audience likes you.
11. And finally, no matter how well you prepare — be okay with the unexpected.

Read the entire article here.