Some tips for you (Not all of which I bothered to draw correctly in the image):
- The back slopes slightly
- There is a place on a wolf's hind leg that has little to no muscle and if you feel the hock of an animal or even just look at it, you'll see why I drew the line there.
- Wolves tend to hold their tails between their legs but I often ignore that when drawing.
- The tail and the neck are roughly the same length
- A relaxed wolf would have their ears angled slightly further back than as shown here, but wolf who is interested in something would have ears like the ones I drew.
- The muzzle you drew is a bit long and thick.
And remember, every artist had to start somewhere and only by practice did they improve. Studying helps too though haha. =3