I think I'd do mine on a painted board but I love this idea! Make a stenciled barn-wood valance! Turn a sign made from old barn wood and stenciled with happy song lyrics into a nontraditional window treatment.
Architecture by Battle Associates Architects; Built by Kirby Perkins Construction; Kitchen by Kochman Reidt + Haigh; Photography by Richard Mandelkorn What an incredible view. The Blues inside match the blue of the bay.
Originally built in 1875 this home includes many detailed features, including window seats and designed glass window panes. (located in San Francisco) This window would just be the "cherry on top" of a cozy window seat.