One of my favorite techniques is to have a partial image in one of my collages. Here you see the last half of a monkey. I like this method because the eye automatically wants to complete the image. It is also a movement trick because your eye is drawn, in this case, to the right after first stopping off at the main focal point, the woman. I believe it is drawn to the right because of the desire to see what is happening to a recognizable figure, the monkey. Since the monkey is obviously in movement that helps with movement within the composition.