Horizontal lines are lines which can suggest peace, calmness and a sense of restfulness. Some prime examples include fallen trees, the ocean, beaches and horizons. Horizontal lines in the center of a frame: the center of a frame can act like a bull’s-eye when it contains strong elements. A horizon cutting through the center of a frame is more successful as a distraction than as a complimentary compositional element. Just like vertical lines, horizontal lines should be kept as horizontal as possible. Also like vertical lines, the Rule of Thirds should be taken into consideration. Layering horizontal lines can strengthen the composition and can be successful in generating patterns and rhythm.