Things on either side of a centerline are almost alike. The two sides are visually equal

A large shape is balanced by smaller shapes

All lines and shapes lead to the middle of the work, with the focus on the center

Adds drama in art, Small people emphasize the huge size of a building

Put a pure color next to the same tint of color

Drawing technique where the objects are drawn to a set of rules, they look three dimensional and they have depth