The document discusses elements and principles of design in flower arrangement. It outlines 10 principles: unity, harmony, proportion, radiation, repetition, depth, balance, rhythm, focal point, and transition. It also discusses elements of art including line, form, texture, and color. Guidelines are provided for achieving harmony, balance, emphasis and proportion in an arrangement based on the purpose, space, and flowers/foliage used. The four categories of materials in an arrangement are identified as line, dominant, secondary, and filler.