The Presentation
If you're using a flipchart for illustrating, remember to write clearly and make the words or images big enough for all the attendees to see. Don't put too much on each sheet. Keep it clear and concise.
When using props, try to involve them as much as possible (for example, Suzanne used the broken Wellington boots to great effect). Let your audience have the props while you are running through your presentation. It can often make you feel more comfortable and may engage your audience more.
Never enter the personal space of your audience unless invited to do so, and never walk around the back of them. This may make them feel uneasy.
Remember to maintain eye contact with everyone; if you do not, you will lose their attention and it may take a long time to get their concentration back.
Have a very clear structure and stick to it. Your audience may try to throw you by sending a barrage of questions in your direction, but if you have a running order rehearsed you should be able to stay on track.
Introduce yourself. So many people go straight into a presentation without doing this.
Pace yourself, and remember to be interesting with regard to tonality.
Don't fidget, jangle pocket change or throw your arms around too much. It looks messy and detracts from the message you are trying to deliver.
Ask questions of your audience, and leave enough time at the end for them to question you.