When laymen talk about drawing, most of them think that "drawing" means tracing the proportions and outlines of an object. Even in art schools, every drawing is first defined as a proportion of lines, and only then light and shadow are added. So, we have to study proportions on their own. What is the proportion of the shapes? Are they small or large? What is the relationship between them? If we think through exactly what this exercise is about, we realize it needs close observation because contrast plays the biggest role. We need to study how the proportions work in relation to each other. We need to develop a sensitivity to this.