Measure the height and width of the window with a tape measure. Add 1 inch each for top and side hems and 2 inches for the bottom edge hem. Increase the width measurement by half (multiply by 1.5) for a drape that opens on the side, and by half plus 2 inches for two drapes that open in the center. Use the measurements to determine the amount of fabric needed.
Cut the fabric to the measurements with scissors. Turn all fabric edges except the bottom edge to the wrong side 1/2 inch twice and secure in place with straight pins. Sew the top and side hems with a straight stitch, using a sewing machine or needle and thread.
Turn the bottom edge of the panel under 1/2 inch and then 1 1/2 inch and secure with straight pins. Sew a blind hem stitch to secure the bottom edge hem, using a sewing machine or a needle and thread.
Attach the clips to the top edge of the drapery by pressing the clips open with your fingers. The clips will be positioned 6 inches apart, with the first clip positioned 1/2 inch from the top edge corners.
Slide the rings over a decorative rod and mount the rod on installed rod brackets. Ring clips must be sized to slip easily over the chosen decorative rod.