You could: Hang your roller shade up tall close to ceiling. Mount a pole that obscures the roller in front of it that deadens into the left wall and extends the curtain width past the right side of the window and put one panel on that side or a sheer to the left and an occlusive panel on the right. Swoop or not to the left. Just sketch it out and see what you like!
Or Hang roller shade close to ceiling with same rod obscuring roller portion and put sheer panels on both sides.

You could hang the roller shade anywhere on the outside of the window. Higher toward the ceiling or just above the frame.
A look that I really love for this type of space is a rod hung very close to the corner wall with only one large decorative finial on the side with lots of wall space. www.ironartbyorion.com has a ton of great hardware to choose from.

Wow. I have a window just like that! We solved the problem by using plantation shutters. I have a cafe figuration and leave the top tier open. The shutter on top opens straight out and lays against the wall. It looks like it should be that way.

Grrr. I just hate when a window is built like this! Instead of a finial on the left, you should be able to purchase a cap for that side, so that it doesn't have to be "naked" on the left side.