It looks pretty good!
I'd suggest taking a look at a reference to see how the back goes - canines' backs are often more steep unlike felines and will be more vertical (of course this depends on the canine and breed :D) But they tend to sit quite upright so I'd say straighten up the backa little bit c:
The front legs look good, but I'd suggest bringing forward the focus on the front of the shoulder instead of the back, since dogs often have pretty prominent shoulder muscles towards the front and breast :3
And then I'd maybe make the back legs a little longer- but that's up to you ~
But it looks great so far, keep going man :D