So, this is going to sound obvious but ...
My pattern now says (and I think it's ambiguous).
Work as given for Back to **. (I've just finished that: 48 cms of stocking stitch).
Shape Neck -
Next row - K57, turn. (yep, done this far)
Cont on these 57 sts for left side of neck.
Dec one st at neck edge in every foll alt row until 48 sts rem then in every full 4th row until 40 sts. rem.
What the feathers??
So I knitted 57 stitches and I 'turned' ... does this mean my next row is purl heading back in the direction I'd started with the knit row (but half way along my cast on 138 sts?) I'm confused!!