It appears that you'll be working the yoke and centre stitches in St st with the remainder of the stitches along the edge in garter st for six rows.
From the wording it seems that you would have done the other side in this manner already.
I'm not sure about the binding off part, not having seen the rest of the pattern, but can only guess that it corresponds to the shoulder?
That's just my take on the instructions though.
I am not obsessed, I'm just highly pre-occupied!