Window scarves can be used to create a variety of soft, informal treatments. Most of them are relaxed interpretations of the traditional swag and jabot, scallop valance or panels. Window scarves are usually one long piece of lightweight fabric that will fall into soft folds. The fabric should have no right or wrong side as both sides will show. Linen, voile, lace or silk are often used for window scarves. When using a window scarf, it should fall somewhere between one-third of the way down the window to the floor. Anything shorter will come up looking short.
Rosettes, or poufs, made from window scarfs are elegant, feminine and easy to achieve with swag holders purchased at fabric, hobby or home improvement stores. Swag holders can be harp shaped, tulip shaped or circular. Mount the swag holders at the upper corners of the window, just outside the moulding. Pull the scarf through the swag holders, leaving a loop of the scarf hanging from the swag holder. Form the loops into rosettes or poufs by pulling on the inner folds of the loop and fanning out the fabric until it is full and rounded. Tuck the top and bottom back into the holder and secure with pins.
Wrapping a window scarf around a decorative rod is a simple yet elegant treatment. Fold the scarf in half lengthwise, and drape it over the centre of the rod. Form a relaxed swag with each side of the scarf, tying a decorative knot at each end of the rod. The ends of the scarf will cascade naturally down each side of the window. An alternative is to wrap the scarf loosely around the rod, completely covering it. Drape the ends of the scarf over the rod so they cascade down the window.
Use decorative medallions, which resemble large door knobs, to hold a window scarf in place. Attach the medallions at the top corners of the window, just outside the moulding. Lay the scarf over the medallions, adjusting the folds to form a scallop shape while keeping the top parallel to the top of the window. The ends of the scarf should cascade naturally down the sides of the window, reaching about halfway down.
Use a window scarf as one relaxed swag swooping over the window's top edge. Drape the scarf over a pole or curtain rod, forming a semicircle over the window's centre. Staple the scarf to the pole in an inconspicuous location, such as the top or back. The sides of the scarf will hang on each side of the window, forming floor-length panels. Add fringe, tassels or braid to the edges for adornment.