How to speak English naturally

[yaibagao]

Please could you show me the way to speak English naturally and smoothly. I'm always nervous when give my presentation in class. I don't know how to calm down, so i don't know what to say in front of the audience.
Thank you!!!: :

[Tdol]

Nerves are very common when speaking before a group. If you can, practise in the room before you do the presentation- get used to being in the space at the front of the room. Explore it and become more comfortable with it. When you're speaking, if you're nervous, you might speak too quickly, so look at your audience and try to see if they are following you. If you're going too fast, pause, take a sip of water and then start again.

http://www.usingenglish.com/weblog/archives/000258.html