That result is the main reason I don't like doing that way. I sew to the back and then fold to the front and topstitch down. I line up my fabric so that it is just covering the first stitching line, and then a narrow topstitch ends up pretty much right in the ditch or a bit past it (on the quilt) on the back side.
I've found the main thing is I need to be extra careful to get a consistent seam allowance when sewing on the binding. After I take the quilt off the LA, I use my longest ruler and rotary cut a very straight edge for sewing on the binding. I sew it with a fat 1/4" seam, and that works for me. Then when I pull the biding forward, I've got a full binding and it just comes forward to where I need it.
if I am doing something with points I want to watch for, I'll cut the binding at 2" instead of 2.25" and then sew a smaller seam allowance. I will also sew several inches and then fold the binding around and see if it's coming out correctly, or if I need to adjust the seam allowance.