First, I really like her closer arm. It both has musculature, and the softness of a real (non superhero 0% fat content) arm. The spider bit the more I look at it, looks a bit twisted (she's dodging, right?) but it looks a bit unorganized - more like she's had her carapace cracked and twisted a few too many degrees towards her head. Also, yay furry spider texture...needs color. I want to see the pink spider chick. XD
I think the spear/sword around her far arm should both be on top of the arm, since otherwise it should be bent in some way to be avoiding them...maybe? Not sure. Very nice sense of movement, tho.