The background looks incredibly realistic. The clouds have the perfect amount of darkness and depth. The rain has nice reflection. I would really love it if you had maybe put some of the rain dripping down the wolf's neck or back, though. As for the lightning, the reddish tint makes it look a little surreal. Lightning usually has a blue or purple tint, but I actually like the red. It matches the wolf's coloring and eyes and makes you feel like he is actually in a desert. (Which may or may not be what you intended, but it looks awesome.)
For the wolf, the anatomy looks fantastic except for a little of the chest. Maybe if you made the chest a little slimmer, it would help. I don't believe you were going for an extremely photorealistic drawing, but if there was some actual fur strokes all throughout it would give it a more realistic feel. Also, fur at the end is very wispy and thin. Just a little more fuzzyness and blur would be good. I love the pattern of the nose, but the way you lighted the drawing gives the nose a somewhat odd shape.
Overall, I truly love this. I would love to see more of your art in the future!
Is it alright if I use this image as my avatar? Of course, I'd give you credit on my page, but if it's not okay with you, that's fine
its still good though. owo
Love it though.
I love the lightnening and the feeling/theme of the artwork