Assemble the Bag
1. Referring to Diagram 1, cover the 9" batting square with the eight coordinating print 1-1/2x9" strips, overlapping strip edges by about 3/8". Topstitch through all layers along each strip raw edge to make flap front.
2. Cover raw edges where strips overlap with 10" lengths of ribbon, yarn, rickrack, or other trim; machine-stitch in place. To couch yarn or small cording, zigzag over it with clear monofilament thread. Sew wide ribbons in place with a straight stitch along both edges or a wide zigzag stitch. Attach rickrack and other narrow trims with a straight stitch down the center. If beaded trim has a decorative header (like this purse trim's satin ribbon), you don't have to hide it in a seam; straight-stitch in place instead.
3. Hand-stitch any small beads or charms as desired, placing them at least 1" away from the flap front raw edges. (Attaching these small embellishments now ensures that most knots will be hidden inside the finished flap.)
4. Trim flap front to 8-1/2" square. With right sides together, sew the flap front and the green print 8-1/2" square on all sides, leaving an opening for turning in the center of the top edge (Diagram 2). Turn right side out and press, turning under raw edges. Topstitch 1/8" from all edges to complete the flap.