overall it looks good.
although it has a few things that stand out to me.

For one his arm and hand it looks so awkward.
i know its a common pose but right now the way his hand is positioned
it looks like he is missing the rest and just has fingers.
it should have a more of a flow when like that you should be able to
see a little of the top of the hand.
that way it shows the bend in the wrist.
his fingers that way look like they might be overly large and are hiding the wrist.

and his other arm looks flat. like the one arm has definition of muscle and the other doesnt.
there should be a little bulge on his other arm.

his legs look strange.
i cant really like figure out how to say it.
i mean they seem to thin and wobbly.like his balance is off [does that make sense XD]

and his tail looks too high were it is positioned on his body. and really thin, like he is losing
fur you should make it more bushy more full that would have made it look awesome. and have it lay more flat on his body not all in the air like that.
unless there is some unforeseen wind.

the coloring looks really good.and the overall outcome is really good.
just a few things that stuck out to me like instantly.
but you do have talent so keep it up.