This text covers all the technical aspects of developing precise professional patterns for garments, and gives students a firm foundation in the tools, concepts, and understandings necessary for success in this highly competitive industry. The focus throughout is on the procedures and principles of professional flat patternmaking using Basic Slopers (i.e., Pattern Blocks, Master Patterns, or Foundation Patterns), and on cutting and testing each completed pattern in tissue, pinned on the form completely marked. This enables the student to learn, and review, the concepts for developing patterns, step-by-step and see the translation of style lines from a two-dimensional flat pattern on the table, to a three-dimensional pattern on a mannequin (fitting dummy). This text is an excellent visual learning tool, especially critical to the vast number of ESL and International students attending design schools.