Thanks for the comments, guys.
I do agree that the building could be quite a bit better. I actually had built the rock spire for something else, but hadn't used it for anything yet and re-purposed it to work for this MOC. Because of this, it wasn't really meant to receive a tower on top, and as such wasn't very conducive to the sort of structure that would really do my flame-wielders justice.
Perhaps I'll redo the building this week since I won't be up against such a hard deadline. I was on vacation for a good portion of this stage of the GC, so I only had a limited amount of time to get everything finished up.
Thanks again, everyone