You have a very good start for use CSers to work with when giving you a redline, and it seems that people have utulized it very well.
For your future reference;
The 3 circles- A wolf and/or canine body (and even feline and other quadroped animals) can be broken down into 3 circles to start forming the body; The head, the chest, and the hindquarters/hips.
Depending upon how stocky/male like/female like your wolf is, the chest can be fluffier or smoothier or an medium in between. We just have to know it's fur and it's a chest. :] Which we can in yours, however the leg should break up the line between chest and belly unless your wolf is in some sort of running/laying position to where the legs break up the line farther down and already in the belly or they don't break it up at all.
One thing that will definitely help is finding photos and videos of wolves on the net and at local libraries to see how their muscles expand and contract, where the placement of things and those muscles on their body is and just the general shape, and also how the weight and fur of the wolf change from winter to summer. :]
I hope it helps.

