This picture represents the element of art, space. You can really tell that the Ferris wheel is farther behind the swings at the fair or carnival. You can tell that because the swings are layered on top of the Ferris wheel.
This photo represents value. In this photo you can see the highlights where the sun is shining on her and the shadows where it doesn't. The darker areas show more depth than the highlighted ones. (photo by Sarah Loven ) Idea of using shadows
Equestrian Center of Walnut Creek Wedding by Shannen Natasha Photography