Trace a copy of back and front, adjust the length to 3/4, flare both skirts by 5 to 10cm at side seam, then:
- on back, mark waistline and square down from dart apex. Cut through the lines
- on front, add 8 to 10cm past center front for double breasted closure, then draw the V neckline from high shoulder point to waistline. Draw the slash line coming from dart apex perpendicular to hemline.