IRON, IRON, IRON!
I think the tute I wrote is still on the QB.
Sew binding on the back of the quilt. Iron it so it is flat with the sticking out from the back, Then turn it over and iron it to the front. Now use some school glue and put that under the binding flap. Then iron it in place, checking it covers your stitching line from sewing it on the back of the quilt. Then use your decorative stitches and sew it to the front. I like what I call 'chicken feet' for my stitching.