I machine stitch to the front side....then flip to the backside and using either liquid washable glue or fusible (in a roll) fix the binding in place so it just covers the stitching line....then machine stitch from the front side right at the edge or SITD on the seam line....either way you catch the backside....all done and you have a nice strong binding.....sometimes I use a deco stitch, specially for a child to give it a bit of zing!