I really like the effects here, as well as the whole pose, lighting, all of it is pretty dang cool.
To crit a few things: I would adjust the eye, turn it up a little bit, and make it narrower. Right now it seems to be too big and is looking straight on, which isn't entirely right for the way the head is turned.
The left arm, the one in the air, is short and thin compared to the body and especially compared to the other arm. If the arms were dropped to hang alongside each other, it would be clear that they were way different sizes. The other arm is great however.
Maybe you were going for perspective with the left arm, and if you were, I would suggest making the arm looking more bent, bringing the forearm forward and tips of the fingers either forward or back but still having them be smaller, if that makes any sense. Right now I don't see the perspective so it just looks like a really small arm.
Sorry if I sound like a real critic haha, I'm just trying to help. Really really love your art though! You're getting really good.