How can I become a better speaker?
The best way to become a better speaker is to speak. You must constantly put yourself under mild stress over and over again in order to become a free and conversational speaker. That means speak in front of your family, where you know they love you, first. Then increase the stress by speaking in front of your friends. You just raised the stakes a little. Then give your big talk in front of your colleagues, where the stress level increases a bit more. Now begin to speak in front of groups of strangers where you have increased your stress even more. You must do your plies, just like a dancer. Repetition is the key.