Compositional studies using negative shapes. Most are studies from American painters of the 19th century, some from artists I enjoy and admire. The difference is from breaking them into far more simpler shapes and forms.
What I did take note was that to make a successful drawing, there needs to be movement. The horizon line are either 30 above or below half way of the picture. And lastly static areas and symmetry is needed if you need the focal point to be dead center.