OK, so here is a window treatment similar to yesterday's only this time it is a real swag not a "faux". That flat striped underneath layer could just as easily be a cornice, a Roman or a blind. Mixing a print with a stripe is always nice!
If you didn't want to do the flat layer, you could always just do one inside mount swag and call it a day. Perhaps you remember this treatment I posted a couple of years ago that I did in a stairwell:
In this case I really do feel that you need trim. It camouflages the fact that you have to cut the board a little narrower than the window opening.