Please note the following changes/additions:

BODY
Shape Shoulders (Short Rows)
Short-row 1 (RS) Cont in patt and work to 6 sts past the Left edging marker, turn.
Short-row 2 (WS) DS, work to 6 sts past the Right edging marker, turn.
Short-rows 3–10 Work to 4 sts before last DS, turn.
Shape Neck

FRONT
Increase for Right and Left edgings
Work same as the Back until the armholes measure 6 (7, 8)in/15 (18, 20.5)cm 1in/2.5cm less than Back to beg of shoulder, ending with a WS row.
Shape Neck and Shoulders