Congratulations on the book and I did enjoy reading it. Making me wonder if one day I might get one done myself. The idea I have is a lot of work though, and I don't see where I will have time to devote to it. Good for you for taking the time and work your way through it.
Btw, have you ever read Jim Butcher's Codex Alera series? It is worth checking out if you haven't. Not only is it a great read, but you might be curious to see the subtle similarities between the worlds in there and in the one you created.