I sew it on the back, flip it to the front and machine stitch it on the front. I know this is not the 'proper' way, but, I do not care for hand sewing and I am not making an heirloom quilt. Another thing I often do (if the quilt top asks for it) is to use a decorative stitch and a variegated thread. It not only adds a bit of extra to the binding, but can cover any late night wobblies in the straight stitching! I use this same practice when making aprons (I make a lot of them for my shop) and summer cotton shifts. Quick, easy and it gives a little added design to the hem.