GweNdZL - hehe thankies
arenyth - Really like the composition and pose, though the anatomy is a bit wonky at places (her clavicles are missing, and the breasts look a bit out of place.)
Overall piece has this kind of 'Ghost in the shell' cyber-punk feel, especially since you chose the pink/purple hair

so the gun design doesn't seem to fit the 'universe' she'd be in, looks almost like a 50's ray gun.
Also take care of the perspective on the weapon, the stock has a different vanishing point than the barrel.
Sublimus - Hope you finish this one, looks interesting
Deadbyxmas - far too early to critique your entry, although the anatomy is a bit funky, might be a style thing though :P
jon_bosco - Uhh i somehow these remind me a bit of Resident evil
Leion - this one is gonna be cool if you go with the whole '18th century weaponry' style....gotta love those powder filled guns

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I'd very much encourage you to look up human reference for the pose, or take a picture....its an incredibly difficult one you've chosen.
If you're in doubt about whether or not a pose works, try acting it out - i find this quite useful since obviously if you fall flat on your face it probably won't work for the character either.
mogster -Really liking your entry mogster, although i somehow thinks he looking a tad bit sad.
Kudos for choosing a spinning clip for that WWII mg...it's got pizazz!
Schmoek - Its hard to figure out the design for the 'contraption' the character is turning on, i know the screen is supposed to show this - but somehow i think it would be better to show it off in action maybe?
Piece has a very interesting style though, can't wait to see more

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notpill - hehe thanks dude, i'm eagerly awaiting your next update
gafana - This is gonna be a cool piece i think when finished, you're having some odd anatomy issues, mainly the hip/chest area...they seem very out of proportion, plus i can't help but feel the piece would be better without the slightly tacky nudity.