Trace back and front separate and adjust length to knee.
On both back and front:
- drop armpit point by 5 to 6cm
- add 5 to 6cm outwards at armpit level
- straighten side seam from the new armpit point perpendicular to hemline.
You can add more cm if your fabric is very thick or you want an even looser style 😉
Then work on center front:
- lengthen neckline outwards by 10 to 14cm
- lengthen hemline outwards by 5 to 6cm.
Join the new points with a straight line.