Ok thanks. See where it says to dec at armhole edge every row 3 times? Those are the only decs you do at the armhole edge; that will be on rows 1, 2, and 3, there is no dec at that edge on row 4 for your size. It's okay if you do it just the first time, one stitch may not matter, but not after that.
Do not do the k2tog at the beg of rows 1 and 3, or the p2tog at end of row 2 after the first time. Just do the decs at the neck edge only, every other row, beginning with row 5. Then work the sts as they appear though, stockinette on the outer edges, dec on RS row, then the cable pattern at the neck.
sue- knitting heretic