6½" x 33" piece of fabric a (outer fabric) in half, with right sides together, and stitch up the 6½" side, using a ½" seam allowance. turn right side out and press seam open.
using the 6½" x 33" piece of fabric b (inner fabric), repeat step one.
place the sewn fabric b piece inside the sewn fabric a piece, placing them wrong sides together and matching up the seam lines.
pin the bottoms of the two pieces together, and stitch around the bottom, using a ½" seam.
stitch a vertical seam along each drawn mark. you should now have a total of six sewn vertical seam lines that join the outer fabric and 