Nice start. Although I really like this style, I think the over-detailing and dithering hurts the depth of this character. It looks more like a rather flat thing with many details than a big volume with details. Maybe you should try first getting some general shading on the character and then adding details which dont change the brightness of an area too much.
I hope you understand what I mean. Theres already a good level of depth in this piece but I think it could/should be extended
