You should be able to discuss your subject without reading your slides. Deliver the presentation from a place where you can have direct eye contact with all or most of the people in the room. If your look like you're enjoying the opportunity to speak to your audience, your audience is more likely to agree with what you say and will enjoy listening to your speech. Your presentation will be much more effective when the audience understands your message and draws a memorable conclusion about your subject. When planning answer these questions.
Presentations can inform, persuade, educate, and motivate.