Window Valances - Before & After

 The "before" - boring plastic valances, the ones that were packaged with the blinds.

 And the "Afters" - simple crown molding, cut and glued and nailed into the drywall.

We think they give a nice dressed-up look to the windows.
We weren't sure how to make the cuts, found helpful instructions on uTube.
Also found a website of someone who makes and sells them, if you don't have a Hammer Man handy.