Thank you! I'll keep your advice in mind and practice more.

Solid work! If you're still learning, I recommend you start with smaller pieces first. Learning how to control your art at the pixel level is crucial. RPG-sized characters and monsters are good to try.

Also consider your palette - I see you've used 14 colors, and you can definitely bring that count down. Experiment with the palette itself, too. In the reference you linked to, the bone parts of the creature have hints of red or yellow on them. Don't be afraid to use a bit of color in your blacks and whites, it'll add some personality. Good luck and keep at it!