Hi, I’m not too sure what the following means (this is my first sweater)
Shape back neck
Next row (rs) : k20 and turn, leaving rem sts on a holder.
Work each side of neck separately.
Dec 1 st at neck edge of next 2 rows. (18 sts).
Work 1 row ending with a Ws row.
Cast off 8 sts at beg and Dec 1 st at end of next row.
Work 1 row.
Cast off rem 9 sts.
With rs facing, rejoin yarn to rem sts, cast off Centre 36 sts, k to end.
Complete to match first side, Rev shapings