After so many comments, you are pretty aware of the good quality of your piece. I don't disagree, yet I have to mention I don't fully like how the charriots look there. I know that putting both of them creates some kind of equilibrium, but the mirroring doesn't match the perspective. Perhaps the big one alone would've fitted better.
wow, it's a very strong image, and you pic a cold principal color, wich is great... you created a tremedous atmosphere there, and the vectorial explosion on a side, was a really cool detail... really great work, congrats