Respect The Audience
Every person wants to be respected, no matter who (s)he may be. Any audience is the same way. The audience wants to be treated as if it is important to you. Why is that noteworthy? Because you can not disrespect the audience. Do not talk down to your audience, treat the audience as your equal.
Do not make the assumption that the entire audience has no knowledge of your topic. Chances are that at least one audience member will have some knowledge of your topic.
Nurture your audience. A good example is a teacher. The best teachers never ridicule. The best teachers treat a student as people. The same theory applies to public speaking.
The opposite applies as well. Assuming that the audience knows too much will leave some members confused and bewildered. Try to set a balance. Try to sound informed and learned in your subject area, but not arrogant or pompous.
In short, try to sound knowledgeable and respectable.
