Breathe - breathe deeply, before and as you walk out on to the stage/performance area. Take your time as it shows you are in control of the situation. Speak once you have reached your spot. Don't walk and talk.
Connect - Look at your audience. Who are they? Why do they want to listen to you? What do you have in common? Look at one audience member at a time and deliver a sentence or phrase to them. Don't look over their heads or get caught up scanning the audience - you don't want to appear insincere and disinterested in them!
Deliver - Be clear. Be relevant. Why do your audience need to hear what you want to say? Tell stories. The best way to illustrate your point is to share a story! Now remember to speak slowly - no need to rush. Give people time to process what you are sharing with them. Think about how you say your speech - remember to vary your pitch, pace and use pause.
Have fun and practice practice practice.