Shaping the neck and shoulder of baby cardigan
Next row (RS): Cast off 3 5: 6: 7 sts, K until there are
5 6: 7: 8 sts on right needle and turn, leaving rem sts on a
Work each side of neck separately.
Dec 1 st at beg of next row.
Cast off rem 4 5: 6: 7 sts.
With RS facing, rejoin yarn to rem sts, cast off centre 21 21:
23: 25 sts, K to end.
Complete to match first side, reversing shapings.
I am getting stuck when it says Dec 1 st at beg of next row. Do I dec on the RS or WS? I have literally done this and unpicked it 8 times today ( nearly gave up) I can't seem to match both sides. If possible would you tell me each row exactly