you already know. wonderfull work bro. great shadowing, the reflections on tubes are really good. the light has also an important work here and u did fine in it...especially on the "wires" refelctions. I like the three babes (poser right?), the connection between them and the rest of the render is done nicely.
the 2d work is subtle and not very complex (if u look at ur other works) but fits well, doesnt distract the eye and gives this a more techy feeling
the work fits in the EVOLUTION theme with the girls inside the capsules and all, but if you showed a more evolutive proccess there, like a baby in the last capsule, in the mid a teen and at front the "normal" girl...this is just a thought - you can use physical transformation like...girl having alien parts..you know give the idea of EVOLUTION really.but its a very nice work man keep it up