Next project try sewingyour binding to the front of the quilt first, then fold it over and stitch it to the back. You can machine stitch in the ditch of your original seam line to attach it to the back, but I have had spotty luck with that. I am usually much happier with the binding if I hand sew it in the back. Sewing it to the front first gives a smoother binding on the front of the quilt. If you are going to have an off area in your binding you want it hidden on the back of your quilt, not staring at you from the front. Just my HO. Good luck.