The document discusses the principles of design that fashion designers use to create aesthetically pleasing garments. It outlines the main principles as proportion, balance, emphasis, rhythm, and harmony. Proportion involves the relationship between parts and the whole. Balance can be formal, with both sides being mirror images, or informal with asymmetry. Emphasis draws attention to focal points. Rhythm is created through repetition, opposition, gradation, or radiation. Harmony combines unity, where all elements work as a cohesive whole, with variety to avoid monotony. Understanding and applying these principles guides designers in effectively combining design elements.