might be beatin' a dead horse here, but here's another goblin image.
http://i675.photobucket.com/albums/vv120/pfat417/study.jpg
Certainly a better comparison than the last one.
(beating dead horses is FUN)
Well, I like your goblins a lot, with the awesome silliness and all (especially the fish engraved on the sword : p ) it's fairly stereotypical, and cool.
I tend to picture them in other ways, as a more tribal-ish society, where they don't really have nice weaponry or armor as they tend to die in large numbers, and any type of quality armor is not going to help much.
so generally I picture them as humanoid creatures around half the size of a human, and kinda like my previous doodles.
I imagine that they just hammer a piece of metal until it's flat enough, and just strap it on their shoulders and chest areas. In the same way with weapons, as they are in large numbers, they tend to just gang up on the victim resulting in a large one-sided clusterfuck. They don't
need finely crafted weapons for that ,as a piece of sharpened, flat piece of copper tied to a wooden handle with string would do just as well( also why they don't have large weapons) as with daggers and such can just stab all they like, quickly and efficiently.
/rant.
I'll try to illustrate this at some point I believe(sorry.no crappy ps painting), with normal pencils and paper, where I am much better at than digital drawings.