✔ 最佳答案
Some of my suggestions for reference....
1. practice make perfect
2. 有準備
3. 有信心
4. research with the right information of your talk
5. don't put to much pressure to yourself, be relax....
maybe....try to think that you are only a small potato,
no need to care what other feel
as long as you have already try your best and work hard on it,
so, no need to consider somethings out of your business or you cannot control