I have tried several experts methods. I sew mine in the ditch using a stiche in the ditch foot. It has a metal guide in the center that keeps you in the ditch.
Also I use iron on thread, it holds the binding in place instead of pins that keep poking you.
Also when you are sewing the binding on the front stop at 1/4 inch from the corner and turn your fabric at an angle and sew off at the point. This helps make the miter easier.