Afghan Square

[kgroch]

I am knitting squares for charity for a local yarn shop that is donating Afghans to be auctioned off to benefit the hospice we used for my mother last year.
I've got the length needed but have a question about the bind off?
It says to end with row 1 or row 9 and to bind off leaving the last stitch on the square since there will be a crochet edge around the square. I just finshed row 1, should I bind off that row or the next?
Row1 is a wrong side row, aren't you suppose to bind off on the right side row? Any help will be greatly appreciated. I'd like to turn it in today if possible so I can get started on another one.
Kathleen