I cut the strips 2 3/4" x # of strips to go around + 15", fold and press, sew to quilt with 3/8" seam allowance (the width of my even feed presser foot). The best quilter's helper I've found is the Fons & Porter book "Quilter's complete guide to quilting". Although I use a wider seam allowance because I like a wider binding, the method is the same. I've had my book for many years and still refer to it from time to time. Try it on a small project and see how you like it.