But I'm not that kind of girl, Danny Zuko.
Unless it's in a kids room or over a kitchen window, valances are dead to me. No hard feelings -just personal preference.
So instead I got some flat trim, thinner than I wanted, but being that there's only a 2 1/2" window sill overhang, 1 3/4" fit the bill. Whatever that means. Nailed up a big hunk of wood left over from the dining room. Topped it with trim and a coat o' paint.