I find I have to smooth binding with my left hand as I sew it on. Also holding it where I want it with right hand. I get better results with just a regular foot. When I join the pieces together at the end I mark where they should meet and shorten it another 1/8" and sew my seam there. I always cut my bindings WOF, I like the bit of give. Many ways to do something and get good good results.