The most common methods of pattern-making are draping and flat pattern. The pattern is used to make 2D fabric sit properly on a 3D body.ĥ steps to prepare your pattern for production It factors in the type of fabric, the intended fit on the wearer, and any trims that will be used. A pattern is used as a template to cut out fabric that matches the required specifications to sew a garment. Pattern making is the process of creating a blueprint of your garment.