Harmony, rhythm, unity, variety, repetition, proportion, and balance are key design principles that help organize visual elements. Harmony uses repetition and rhythm to pull elements together, while unity helps all parts function as a whole. Variety adds interest through differences and contrasts. Repetition unifies through consistency. Proportion gives quantity and depth, and balance arranges elements so no part seems heavier than others. Examples of each principle are shown through images that demonstrate the fundamentals of visual organization and interpretation.