I like the one in the upper left corner of the right one of the pair (if you can follow that). I'd mirror that one over to the right side and add the small scroll border around the bottom.
But I defer in advance to the guys who actually know what they're talking about.
I think I would want the scrolls wrapping toward the visual center instead of away from it. I'd probably grow them from vines that would start at the bottom and wrap around the window.
Looks like a good plan to me Jim. You have a much more balanced design and you shouldn't have too much trouble applying leaves. You have a condition where your leaf mass can be uniform because the spaces for them are equal. Go for it!!
Ron S