woo, finally got something i can crit.
this might go somewhere related with helms lighting crits but oh well.
i see, in alot of your pieces, this very dithered look, you seem to dither everything you make everything blend so smoothly but doing so doesnt allow for hard edged highlights, and this also takes away interest from your picture. i think you should push the value of everything more, if your gonna keep the dithers as they are, maximize the areas you have left to put stronger highlights in. doing this will dramatically bring things into the foreground, as well as push others into the background.
also, im alittle confused of the lightsource, it seems it could either be from the top, or the top left, but you have some highlights that seem to come from light under the beastie himself.
i love the hand gestures he has and the proportions are so funny!