My method: 2 & 1/4 inches wide BIAS material; double folded; attached with 1/4 inch machine stitching (raw edges to raw edge) on front; rolled over and hand sewn to the back. I use those snap barrettes to hold the binding in place as I work along the side. NO straight pins = no pricks! I buy them at K-Mart or a discount drug store; the quilt store ones are toooooooo expen$ive. Good luck!