Prayer for the Dark Gods

I did this for a Warhammer 40k illustration contest. This is probably the biggest digital piece I've done so far, and it consumed quite a bit of my time over the last week and a half. I some what consider it a success, but please point out any and all flaws that you can see.

Edit- changed some things like the color of the building and added a bit of blue to the atmosphere. Also fixed a few minor mistakes.