I really like the composition and the light on the top of the pews. The blown out highlights in the window were hard to avoid in getting this shot as a single exposure. To me, it looks like the type of shot that could benefit from light-handed HDR (slightly desaturated to avoid too much vivid color, which wouldn't quite match the mood of the shot). That would allow you to get detail in the room and in the window. Overall great shot though!
Great light! The slight highlights off the pews is great. There does seem to be a slight tilt for no apparent reason though.
When you have strong vertical or horizontal lines like your window, I think it's important that one or the other be perfectly parallel with the edge of your photo in most cases unless the tilt is clearly intentional. In your case the left side of the window doesn't have equal spacing against the border, which is making me wish it were titled just slightly clockwise. It's a very slight adjustment that I think would have a large impact.