The document discusses four basic design principles for non-designers - contrast, repetition, alignment, and proximity. It states that contrast helps attract attention by making different elements very distinct. Repetition unites elements visually through repeated use of colors, shapes, etc. Alignment creates a clean look by placing elements in a visually connected way. Proximity groups related items close together to reduce clutter and give structure. Examples are given to illustrate poor and good uses of these principles.