I don't think that I'd turn it into an attic window type design. I think Paper Princiss describes what would happen very well.

Wow that would be beautiful!!!!!

I agree that the elements would be separated from each other and would appear chopped up with the basic scene lost.

I agree that the most successful approach might be to appliqué the "windows" so as not to distort the design.

Please let us see the end result if you deceide to make it. Good luck to you!