First proper critique ever
so here goes
Firstly, epic awesomesauce drawing, i just love it

Good points
the textures give it an interesting feel, very nice
and the girl with the dress, i think shes been dont really well, she has a body shape, which is good
The body and the hair of the second one are really good, as are the eyes of both the girls
The effects you have used give it and awesome feel, and the little dead people in the backround are epic!

now, things that could be improved
first off, the hardest thing of the body to draw (for me)
hands
i know, from drawing a heck of alot of manga, that
hands
can
be
HARD
but i found a good way to do hands is to start of with a circle, for the palm, then add fingers, look at your hand for refrence
but yea, you can probably find a good tutorial for hands, although in your style, those hands look good.
also, where she grips the sword, the hand has no back line, which im pretty sure it would
and with the girls, both of them, i notice there is shading on one, but not the other
and i have to say, your shading on the one that has it is epic.

im not the best critique person, because i dont do digital humans, but to be honest, i love this piece
love it

hope this helped, and hope i didnt sound harsh or anything