The moon looks a bit too strong for me colours wise...Maybe you want to soften it a bit. Some glow on the characters and weaponry would be nice as it gives off some epic lighting effects on the the objects and shows that the light really has some effect to the image (some kind of reddish glow with a brush would work, but not too sharp).
It's not that you went overboard, you just need to neutralise the lighting and it will be fine. With that, I mean that you shouldn't make light and dark work against eachother but work with eachother, making it look more epic.