Unity is what holds a design together and prevents the feeling of disorder. Loose visual communication prevents the eyes from finding a center of interest.  This causes them to bounce around with no place to land. Unity and simplicity are key aids to effective visual communication. Here are a few suggestions:

- Use a LIMITED palette.
- Stick to a few type styles.
- Keep the number of shapes and sizes of art and types to a minimum.
- Place art and heads where they won't interfere with the natural flow of reading matter.
- Have one element in an illustration or one illustration in a group of illustrations dominate. Create a center of interest.

Obvious ways to create unity is through enclosing everything in a border, using the same basic shape, tone, color or mood throughout, and  isolating the layout with white space.  "______________ space" can refer to the areas left empty surrounding or within an image.  It also refers the amount of space between characters or between lines and blocks of type.