The dust particle effects (or is it snow?) add a lot to the image, I like how the shapes change. The snow, rocks, and branches at the bottom are very well done, but I actually find them slightly distracting because they move my eye away from the wolf. (Which I'm pretty sure is your focus.) This piece seems like a less-is-more kind of piece, since you established most of the background as an impression of mountains and the dichotomy between dark and light brings the spotlight too your singular subject which is pretty much the most detailed thing in your scene. (That's a good thing.) In my opinion you don't need to add anything more, and I myself would perhaps have less stuff in the bottom.
I also love the style of your wolf. It's got a larger scruff and smaller body compared to a live wolf with those body proportions, but it works really well and is so unique. The fur is textured so well. Great, great job on the wolf. And the grass is very well done too. The light beam really makes the piece come to life.