Shaping heel of a sock question
I am relatively new to knitting, and this is my first attempt at a sock.. I'm very frustrated! I've read up on short rows, watched the video here, but the pattern has me confused. It says:
K15 (17, 19) sts for heel. Leave remaining sts unworked.
Work back and forth in short rows for heel shaping as follows:
Row 1 (WS): P14 (16, 18), SW next st, turn.
Row 2: K13 (15, 17) sts, SW next st, turn.
Row 3: P12 (14, 16), SW next st, turn.
Row 4: K11 (13, 15) sts, SW next st, turn.
Row 5: P10 (12, 14), SW next st, turn.
Continue to rep last 2 rows, having 1 st less before SW on each row, until 8 (9, 10) sts have been worked.
Next Row (RS): K8 (9, 10) sts, SW, turn.
Next Row: P9 (10, 11) sts, SW, turn.
Rep last 2 rows, adding 1 more st before SW on each row until 15 (17, 19) sts have been worked.
Now where I get confused is when it has me K13 then SW the next stitch; do I work that SW stitch first, then re-wrap it?
Also, the next row I P12, SW next st, turn, so then I've got the very first SW stitch unworked on the left needle, right before the one I'm SW. Is that what's supposed to happen? From what I'm understanding, I'm going to have several of these unworked SW, is that correct?