I tried a
rough edit to play with some things. I didnt take it in an rpg direction i suppose, but maybe youll find it helpful moving forward.
After my last image i posted here i dont think that i have much clout in telling you that the pose could use some work, but i think its true. mine isnt a great interpretation either considering that it looks like hes leaning backwards a bit, but hopefully it can give an example of what you can do with his arms/legs in terms of placement potential and shading.
I dont think you really need the dithering that youre doing , values alone can probably achieve a better result unless you are dithering with a really dark or light value. otherwise i cant see it being necessary here.
The spear looks unmenacingly skinny, there is no perspective to give it any depth so it looks tiny.
I havent any idea whats going on with his one tooth being like 4 times the length of the others but its a bit distracting. the head is a bit big compared to the rest of the body as well, which is having an effect of making him look more cute or stupid than scary or evil.
hes a big sprite theres a lot of information you can squeeze into that space.