Well, Posemaniacs is ok to use, but you should really be using it as a starting point for anatomy and pose, rather than more-or-less copying it verbatim. Right now, I feel you've just created a generic Posemaniacs muscle-man instead of an actual bigfoot type creature.
Is this really bigfoot?? It looks a lot like a Posemaniacs exercise done at 50 x 50... =/
well then, don't add it to the weekly challenge and just add it to my gallery. I kind of like how this came out, so I'll just make another bigfoot that's more sasquatch-y.