The shading is good!
It's mostly in the right places and I'm also a fan of the highlights.

I feel like you're holding back though.
eg. with the horns, you could've shaded a lot more.
As-well as the left side of the face.

I feel as if the light is in the back right -
meaning the left ear would be completely shaded and so will most of his left side.


Not bad!
Keep it up!

EDIT: Go wild with the shading.
Pretend you're some crazy artist and just experiment.
My art teacher used to tell me that - just don't hold back -
sometimes scruffy can look better.
Just experiment with shading.

-Polygon

Thanks for the feedback bro!!
will definitely keep all that in mind when working
in the future, I might go back and fix the shading later