Draw a rectangle using the following measurements: Point 1 to 2 = ¼ bust measurement + 1cm + 0.5 cm (for ease). Point 1 to 3 = front waist length. Now close off the rectangle making sure it is perfectly squared (each corner should be a 90º angle). Note: this rectangle is NOT the same size as the one for the back pattern. It is probably a bit longer and wider.