There are three people in this world who don't need contouring: Marion Cotillard, Halle Berry, and Gisele. That's it. Unless your cheekbones are so sharp they could grate cheese, you could probably benefit from a little highlighting here and a little bronzing there.
Watch this super helpful makeup tutorial to learn how to enhance your own features. You'll see that contouring is your friend, making what's best about your face jut foward and recessing the, er, less attractive parts.