This is a truely excellent shot. I think this image excels in several areas. For example, I love that within the reflector you can see office lights giving depth to the building and not just a flat surface. I also love how well the reflectee shows up. Many times one loses detail in reflections and you managed to maintain the visual integrity here. Good luck and well done.
The lights in the modern building gives this anotherlevel of meaning. People working and looking out to the church, perhaps judging it. The reflection also looks like a monster. Good shot
Had you have been located more central to it it could have looked a little better, great idea but possibley a crop required to not make you feel like your sliding off the edge of the picture - however you would then have lost the top of the picture. Good effort and nice thought behind the shot.