Right Placket and Collar:
With smaller needles, cast on 14 sts.
Row 1 (RS): Sl 1, (p1, k1) p1.
Row 2: * K1, p1, rep from * across. Rep these 2 rows until piece measures 4” from beg, end on WS. Mark end of last row for beg of collar.
Inc Row (RS): Work to last st, M1p, k1 – making 15 sts.
Inc 1 st 1 st in from same edge EVERY row 15 times more, working incs into ribbing – now making 30 sts.
Inc 1 st 1 st in from same edge every RS row 13 times – now making 43 sts.
Inc 1 st 1 st in from same edge every other RS row 5 times – now making 48 sts.
Work even in ribbing as established
Row 1 skpkpkpkpkpkpk
Row 2 kpkpkpkpkpkpkp until 4 inches
Row 3 skpkpkpkpkpkp,I,k 15
Row 4 s,I,pkpkpkpkpkpkpk 16
Row 5 skpkpkpkpkpkpkp,I,k 17
Row 6 s,I,pkpkpkpkpkpkpkpk 18 etc.
Since you have to increase at the same edge each time, you do it before the last stitch on the odd rows and after the first stitch on the even rows.
When you get to the point where you ahve to increase every other rows, you'll only do it at the end of the right side rows.