I always sew my binding to the back first, then machine stitch it to the front ensuring the front stitching line lands right on top of the first. To ensure this happens, before I sew it to the back I finger press creases in the binding by folding it into thirds so I know exactly where to sew, often times it will be slightly larger tan the standard 1/4 inch, often 3/8 inch for a 2-1/2 inch strip. Set your needle over to accommodate that exact width and you can complete a kong sized binding, front and back, in 1/2 hour. I have to tell them it is machine stitched on the front, it is so hidden. Of course if it is to be judged at a quilt show do it the old horse and buggy way! Lol