ALL YOU NEED. NO MORE.
Result? Everything you need. Nothing more.
Tell your story, your adventure of discovery, in simple words and evocative images, and your audience will be with you, rooting for you, all the way.
Garr Reynolds uses a "bento box," the beautiful Japanese lunch, to illustrate his ideal for presentations. Both nutritious and beautiful, the bento box pleases and satisfies.
So will your presentation.
I highly recommend his book and blog, both called "Presentation Zen."