This stimulates visual interest, and if it isn't interesting, it won't be read. Alignment Expanding on the idea of proximity, don't place elements randomly. They should all be aligned or connected with some other element. This helps direct the viewer's gaze by providing a visual organizational structure for the screen elements. Consistency Consistency creates structure, and structure guides the user through the material.
Consistency is developed through repetition.
For example, this slide has an image on the right side. If there were images on other slides in the presentation, those would be positioned on the right as well. The title and body fonts could also be repeated throughout. Using Color One of the nicest features of personal computers is their ability to display objects in full color. With color, like all good things, a little bit can go a long way.