Hi there, and first off, welcome to Pixel Joint!
This is quite cool, I really liked this piece, and the wolfie looks very nice to me, the glowing eye is quite of a nice detail to it!
But hey, I decided to take some of my time to write this down for you and give you some feedback, and give your piece a little edit to ilustrate what I mean.
I see that some of the colors depicted on your Werewolf piece are quite redundant (that means you are using more colors then you should be using/unnecesary colors). So, you are actually using 41 colors, and some of the colors you put there only show up once or twice and only on a single cluster! (In case you don't know a cluster is, here is a nice pixel art tutorial with some cool terminology, it's nice to have a look so you understand what's going on).
There's also another issue with the colors ramp, so your piece is quite dark and with low contrast (It's not harmonic), you can achieve that by increasing contrast/changing some of the tons to brighter and other to darker.
Here's a little edit to illustrate all of what I've said above, plus, I added some more light to what would be the mandible, so it renders out better, and a little dithering here and there :).
Link (16 colors)
Once more, welcome to PJ! have a nice time around and nice and a cozy stay!
Wow! Thank you so much for that feedback, it's really useful :) I will try to apply this knowledge in the future drawings