Honestly, the pallette hurts my eyes, and there isn't much detail. I'd say this is still WIP.
Maybe you can add some more detail/texture and change the pallette around. Make it look more like a skull! You know... you could make it look like a dead cowboy's rotting head, or make the bandana all beat up so you can see the lower jaw and teeth, or put a bullet hole in the hat, or a snake slithering through the eye sockets, anything!
Not trying to hurt your feels or anything, just trying to be constructive.
ohhh it's perfectly fine, Thank you, pyxl, for your helpful criticism. much appreciated :)