Keep the following things in mind ;

1. Speak clearly and with poise.
2. Speak in short sentences.
3. Be relaxed (easier said than done)
4. Make eye contact with audience.
5. Know your content perfectly.
6. If possible, Try humour.
7. End speech with a conclusion.
8. Always think positively on stage.
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the 4th one is not useful for a good speech.
Follow some tips......
1.ask some questions little demandingly........
2.dont repeat same word to make more sentences.......
3.dont get timid if you forget something continue whatever you remember.......... confident about what you are saying.......
follow these they'll help you.
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