Everything is a learning experience, including doing a presentation. If you can find a way to videotape yourself while you are presenting, you will find it invaluable when you look over it later. You will be able to see your strengths and your weaknesses, which side of the room you tend to look at, and how confident your overall performance appears.
Here is my unsolicited advice for freshmen starting high school. (Freshmen, listen up!)
Keep a tight rein on your freshmen.
Parents, your kid may look more mature and responsible than ever—and s(he) could very well be—but the beginning of the school year is not the time to extend latitude.