Step 1
Make a copy of your basic bodice with zero wearing ease.
On back, discard the dart half from center and half from side. Lower 1-1,5cm from armpit on side seam, then draw the neckline coming up to center back at right angle.
On front, lower the same amount on side seam. Draw the underbust line as shown in this post at step 1: radius of the circle is half of bust distance -1cm. Change the waist dart making it 3cm wide all the way from waist to circle.