I like your style, the composition and colour scheme flow together very well and, despite the size, there is little empty space.
But I gotta mention one of my biggest peeves here. Try not to blur your main render into the background or add effects over the main render (that white airbrush, cloudy effect) unless you have a reason to. I think this would've looked a lot better if your main render didn't fade into the background.
You're at the stage now where stylisticly everything is coming together and you've got a good grasp on colouring, focus, composition, etc. Keep practicing and pretty soon you'll have some more advanced techniques down.