There are so many uses for shelf brackets! These are shelf brackets, repurposed to frame a window --- what a clever idea. You could do this to define and separate spaces in the same room, too. (Say an entryway and a dining room.
This gal makes her own curtains out of canvas drop cloth from Home Depot! Find it in the painter's section, it already comes pre-hemmed. She makes beautiful indoor and outdoor curtains (for patio) Doing it! i-m-a-maker-i-make-things-diy