Excellent work Lancer! The studies are really payaing off. The rendering in that piece with the girl at the pillar and the mech is superb!
I don't think I can say much after Andrew's succinct points above, other than possibly to correct the character's gaze so she could be looking at one of the tentacles rather han looking at something outside the frame.
Also, since she has sliced through one of the tentacles, you could possibly reverse the direction of it's head into what might be a more likely pose, as well as distinguishing it from the others (not sure if that would affect composition though).
Also, Morrigan's feet seem far too small, bear in mind that feet are supposed to be of a similar lenght to the forearm (hard to imagine but it gives you an idea of where you could be aiming). Similiarly, the values on the foot facing us seems to make it feel shorter still. Also, maybe it's just me but her ears and the side edges of her face seem a little too well lit for the lighting scenario.
Seconding Andrew again, you've really progressed recently (the study in post #450 is spectacular!), gotta do more work now myself to catch up!