Okay, I've got a couple of quick suggestions- first, well done on the light source. It's believable and gives a sense of danger to the piece.

Now, onto the fun part of C+C, the critical appraisal- First off, it's imporant to know the general structure of the character- despite the clearly stylised nature of the character- and good job for that, you've pulled it off mostly- the head, which appears to be some combination of a watermelon and pumpkin, probably should have some shading on it. The light from the front would probably cause the contour lines to be thicker, or for the light to spread a bit more enthusiastically.

Second, the expression needs to be hammered out. Is he just scared out of his wits or is he TERRIFIED THAT HE WILL BE PUREE'D ANY SECOND NOW!!!!!!!!? Put some real fear into those eyes. It's a comical peice, unless i've terribly misread it- make it comical! Get some exaggeration going! Make him fatter, or thinner, but go a couple steps too far in either direction. Probably fatter, by the head. Make the expression way over the top- put the eyes much larger, get the body reacting a bit more (either give him some body language or make his current stance more tense).

Anyway, good luck!

Gah. Sorry for the misconception of his vegetable- just for fun, maybe you could bring in the layered nature of onions, or have his eyes watering, or something. Anyway, have some fun with it. It looks promising.

End of day WIP

Ugh, that dithering looks octogonal.

the armor (?) looks more like a T-shirt. some additional seams, bolts and other metal details are the things that would make it more like armor.
some additional spec highlights couldn't hurt either.

I think the octogonal looking dithering actualy works. nice improvement.

Well make the chest area more square so it doesn't look like a bra

me likes...
how bout addin a hat, only wt dat "sqwiggle" sticin out? and mybe some gloves!
[u could create a zombie virsion]