The rules
Its easy to find rules about photography: Keep the sun over your shoulder or Shoot only at sunrise and sunset or Shoot only around noon or Never let the horizon run through the exact center of the frame. Its fine to know the rules, but its also essential to break them. Strictly adhering to the rules may ensure mediocre photographs. Top photographers break the rules as often as they keep them. Photography should be spontaneous, alive, and exuberant. If it works visually, do it. http://www.nationalgeographic.com/media/photography/camerabag/hottips.html