This is my first time doing a style like this, what can i improve?

I'm not an expert but I think the tail could be a little better. Nice job on the rest, it's really impressive!

I like it! The only thing I would say is the poses looks very stiff.

what would you suggest? should i lift one of the front paws?

Hmmm... if you want my advice, I have a few suggestions. If you really want it to look fierce, maybe add some drool to the snarl, and make the tail erect instead of droopy so it matches that of an angry wolf or other canine. The same can be said about making it's head a bit lower than it's torso. Ears should probably be pointed backwards for aggressiveness rather than neutral-outward. Make the neck-fur stand out so it looks like it's a threat. If you're planning on coloring, I'd suggest some dramatic shading on the far side of it's face so it looks more imposing.

That's about all the advice I have to give, otherwise it looks really great! Better than I would've drawn, anyway. Good job! ^w^

Its really good the only thing i have is if its so "angry" and its atention is so focused then wouldnt the ears either be facing whatever its looking at or pinned?

It looked pretty good, especially the face. Lots of detail there. I do think that it's a little bit out of proportion. I think the paws could be a little smaller, and the shoulders could be a little bigger. It looks like the further down it goes, the larger it gets, if that makes sense.