Giving a good presentation is a lot like telling a story. You need a beginning, a middle, and an end, something to keep your audience interested, and a joke or two never hurts (depending on your topic). While your slides can help you build emphasis and help you add some piazza, the overall strength as a presenter really comes down to your ability to tell an engaging story.
As you watch the following presenters, think of a time you told a really good story and how you can share your book with the audience and judges.