Looks like the work of a schizophrenic. Drawn with certain skill and quality, though staying within the artist's comfort zone. As usual, with images like these it's hard to know whether level of detail and imperfections are intended as a style by the artist. It's a fun picture to look at, though it's unfortunate I couldn't apprehend the picture's meaning.
If there's one thing I'd improve with this drawing, that would be the shading, especially on the larger arm.