The colours and textures are beautiful but I feel you should have concentrated on the lower window only. At the moment, the picture is cut into two by the ledge above the lower window.
I'll buy these windows as an entrance, but the image seemed very busy to me, with some difficult focusing issues (the stones between the windows don't seem to be in focus, and that throws me off as crossing the center is necessary to consider both windows). All the textures, without much that seemingly ties them together (other than that they're part of the same building) increased the busy feel for me (and made it a bit much for me).