
Step 1
Trace a copy of back and front bodice until a line approx 15cm below waistline.
On back, discard the dart: 2/3 is taken from center back, 1/3 is taken from side seam.
On front, draw the underbust line and redraw waist dart 3cm wide at underbust. Reduce from side as much as you did on back to match the slope, then redraw waist dart matching the amount you took at side.