Outside the theme, this image has some compelling qualities. I like being able to see through the window. However, while this has some geometric qualities, I don't find them strong enough. A stronger composition might be get closer (or zoom in) to get nothing but the window and wall around it, along with the roof and some blue sky at the top. (Another composition would be the window at lower-right with the steeple at the top-left, thereby achieving a sense of balance.) By doing so it seems you might draw more attention to the geometry of the window and roof.