Cheers.
It's an option, but I don't think it would quite work...
Window looks like this, imagine the Blue triangles are the triangle-y upwards edges of the blades:
As the window curves, the only way to put another in that bottom space would be to angle the edge really weirdly, which wouldn't follow the rest of the blades and still wouldn't cover the glass as it curves out:
Even if you make is a very sharp angle this this, it will still have to be a very large blade to cover the glass as it curves out.
Another options is to do a big blade edge that overlaps, but then you are no longer following the glass and it might look out of place:
Instead you can do what the cardboard blade is showing:
Or curve it up like so: