Tie-Up Valance - . Sew a rectangle to the window size, adding a rod pocket at the top. Stitch a length of wide ribbon on each end of the valance, 4-6 inches from the outer edge. Drape the ribbon over the top of the valance so there is a length of ribbon running down the back and the front of the valance. Stitch the ribbon into place and use each ribbon tail to tie up the fabric.