I love the character, and the model, very nice!
I would have a bit of critique about the final image though, if you'd like. I feel like model on its own is a bit more striking than the final image, which gets a bit drowned out in the storm and mist. The background doesn't seem to be very contrasting to the character, it's all similar values.
I also don't like that much the grey color in the snow. I see you wanted to create a dreary atmosphere and maybe it's just a personal preference, but the gray looks a bit dirty, I would suggest trying it out with dark blue instead.
Hope some of this helps!
And finally, just for fun, I was curious how it would look with a bright background so I did a very quick edit (Not saying you have do it this way - it's your image, but maybe you'll find it interesting too :).