Alright so... second critique I ever gave (rarely doing it...).
I firstly love the way you did the fur and how the colors you chose perfectly blend in. The fur details are amazing, they can catch everyone's eyes. I especially love the fluffy look it gives the wolf.
I would focus a lot on the wolf though, so I would blur the background.
I'd also focus more on the eyes, the details of the face. It's eyes are exactly like the one's of the wolf, but more details to the eyes, like, more shades, different shading, where light falls, etc. He almost looks like he has no soul, like he is a puppet, so more shading, next time, would be great. (:
If you noticed pictures of wolves people took over ears, you can easily see that the ears are a bit too small. A bit bigger and a bit more pointy (not like a fox) would work.
This would be all, overall, this is great, and I love every piece of it, I can say you spent some time working on details and the background can easily take away your breath!