Ugh, excuse my horrible anatomy (I'm not a genius at drawing these guys either) but I would suggest
. let the ears fall back a little more instead of having them straight up
. make the neck a little sorter (so that they don't seem so bent over)
. continue the mane over the forehead
. make the tail a little thicker at the top and thin it out at the end until you get to the nice fluffy tail fluff
Meh, I know my drawing isn't amazing... maybe you could teach me how to draw legs? XD