The elements and arrangements within a composition, as well as the composition (composition defined for visual arts ) of the photograph itself make up a very large portion of the over all image. The other remaining elements are creativity and of course LIGHT. Seeing as how photography is based on light and the principals that make up light. There are certain rules that need to be followed in composing your photographs. Some times elements, objects, and people are already presented in a composed manner and it is just up to us to make the photograph. Other times, this can be the tricky part, we have to compose and arrange the elements ourselves. This can be done by physically moving the elements and objects, or by physically moving around them and getting creative with how you position the camera as you are making the photograph. The angle and position in which you take can give a dramatic and some times impressive composition that gets you away from the boring, blah, snap shot qualities that can be made. The Digital Photography School has a great post that discusses The 5 Elements of Composition. A post that should be read, even if you are a seasoned pro. There might be something written in the post that could give you a new idea. Or might spark some sort of creativity.