As others have already said, sharpness whether a focus issue or not, is not very pleasing. Colors are way over saturated. Not sure I really like your composion as the various angles just seem to wander all over the place. Perhaps you tried to accomplish too much with one photograph.
Wooooo nelly way overdone. I know stained glass can bring out a bit of a glow but you should try to desaturate a little in PS. Also I agree with Joel_W composition is not that great. The angle is not attractive. You should go back and try to get a better angle where the stained glass is center down the top middle and the two walls filling up the frame on both sides.
What I do like about this is that it looks like a very nice ceiling and with a little more time and composition and processing you could have a really great shot.