I found some examples that might help! http://www.houzz.com/arched-window-drapes

Thank you! We are hoping to avoid drapes because there are 5 other windows in the same open space, each is tall and narrow, so once I start using drapery, it might become a wall to wall overwhelming effect. I need to post images to make myself clear!

Oh for sure! You can attach images to your posts here. That always helps a lot.