To the above list I'll add:
1. Arrive early and be prepared.
2. Don't chew gum. Don't bring any food or beverages into court.
3. Address the judge as "Your Honour".
4. Use formal English, not slang.
5. Dress modestly and business-like. Be neat and clean. Do not wear excessive jewellery and make-up. (Last sentence mainly for ladies).
6. Don't roll eyes or give other inappropriate looks and gestures to opposition or judge.
7. When speaking to the judge, always look at him/her and speak clearly and confidently.
8. Don't pretend to talk like a lawyer. You will not impress the judge.
9. Don't be afraid to admit you didn't understand a question. Most lawyers love the sound of their own voices so chances are they won't mind repeating what they said.
10. Present your self as being calm and in control. This includes always standing and sitting up straight. Do not hunch over and appear pathetic and weak.
11. Always tell the truth.