ferrocks head needs work in alot of places. the teeth i can deal with, can be argued the cartoon look of them comes from the character itself, it doesnt clash with the fur too much, almost looks like its dead right. the mirrored aspect i cant really deal with though.
overall, i dont think the snout comes through on the mouth enough on the sphere, looks odd, the mirrored elements over all take alot from it, the cap doesnt look quite right, although its drawn correctly, it just gets cramped too much at the top of the head.
although the drawing work on it is excellent, im just not sure.