Here is what I do to make bias binding and using bias binding.
First, I starch the fabric liberally then press until dry. The fabric is fairly stiff at this point. Then I cut my bias strips and sew them together.
Leaving the strip open, I starch again liberally, then fold in half wrong sides together and press until dry. The starch will stick the fabric in half and you won't need to worry while stitching it to your quilt. The fabric is stiff, will sew down easily to your quilt and help you form terrific mitered corners or glide around rounded corners.
I use the old fashioned liquid starch Sta-Flo. I usually mix this 50/50 with water and put into a spray bottle. If the sprayer gets plugged, I just run it under hot water for a bit and it's good as new.