Place one strip of binding with the right side up. Then at one end of the strip place a second strip right side down at a 90 degree angle. Place your ruler at the top left side of the second strip and angle down to the bottom right edge of the first strip as shown in the picture below and draw a chalk line. Use a couple of pins to hold in place and sew across the chalk line. Cut off the corner leaving a ¼” seam. Attach the third strip in the same manner.Press the seams and then fold over one inch at one end of the binding and press.
After attaching the binding to the front of the table runner, pull the binding to the back side and hand stitch to the back piece.