Tips on giving a speech or presentation:

• Practice your presentation several times out loud (if possible).
• The first thing you should talk about after introducing yourself and your topic is why the audience should even care about your topic (and don't assume it's obvious).
• If using a hand-held microphone, hold the microphone near your mouth, not in front of your chest.
• If you're using a computer for slides or a demo, set it up ahead of time if possible.