The following points will be helpful as you prepare. Generally it is better to stop a few minutes earlier rather than later. Oral presentations are scholarly . If you are given an outline to follow in the presentation, refer to each item on the outline. Try not to spend an inordinately long time on one item to the neglect of others.
Visual aids are helpful in conveying ideas.
Transparencies in particular are relatively easy to prepare. Data projectors and computers are available for all students to use to prepare visual aids and handouts. Have a friend or spouse listen to you. Videotaping your presentation will provide valuable feedback and is encouraged. Seek honest feedback from your peers.