The first principle to consider is unity.
Artists accomplish unity in a number of ways.
One way is to place elements close to one another. When we see a group of people together at a table, we understand them as a unit, even though we know that they are all individuals. The same principle applies in art. Another way that artists create unity is by making things similar in shape, color, texture, or form. Uniforms are a common way that people are unified in our everyday experience.