These tulips in full bloom are certainly beautiful and as a group could be considered the center of attention in this image. However, when I saw them backed by a small body of water I positioned myself such that the tall-stemmed purple tulip stood out on the dark water. That single flower became the center of attention for my composition. The fact there were shadows of nearby trees reflected on the water made the image even better. You may want to keep this rule at hand when making your own photos…have a center of attention.