Hang curtains wide and high over a window casing to visually enlarge the space and add height to any room.
When measuring for curtain rods, I like them to extend between two and six inches outside of the window casing. That's this trim that surrounds the window. Go a little bit wider for wider windows, and a little narrower for narrow windows. The rule for where to hang your curtain rods is an inch or two below your crown molding, if you have it. If not, let it hang the same dimension above the casing as the curtain rod extends to the outside of the casing. So for example. If your curtain rod extends six inches outside of the casing, hang your rod six inches above the casing.