You had the basic body structure good, the snout was a bit long and the eye too big. The tail also needs to be shorter and fluffyer but besides that there wasn't much.
#1: The head needs a little work, shorten the snout and mak eth eyes smaller and that will help a lot. The ears are usually more relaxed. Though what you have is a good shape if they are interested in something. Also try adding some fluffyness around the jaw instead of going directly to the neck. The nose isn't really that big, and it has a triangle shape.
#2: I just drew here what a wolf paw looks like though if your not going for realistic then you can continue to do the paws as you have been, those look fine.
#3: A close up of some eyes. The one on the left is the more realistic version of a wolf eye but I normally use the one on the right. But what you have is good just so long as it is smaller.
Thats it really. Hopefully that was helpful for you. Good luck with future drawings! :3