Step 4: Sew

Sew all the way around, about 3/8 inch to 1/2 inch from the inner edge of the binding, making sure you are sewing both sides of the binding and the fabric in between.
To turn a corner, sew 3/8 inch to 1/2 inch past the next side, make sure the needle is down and all the way through the fabric, raise the presser foot and pivot the fabric around the needle until it is facing in the direction you now want to sew and then continue.