Hey, Z, I really like this, and to me, at least, it seems like you're starting to define your style a bit. In the past, you had a much more sketchier style. But this latest piece shows more clear definition. So I say bravo, for improvement.
Now on to the critiques:
Obviously, the piece still retains your rough style. I would suggest trying to clean it up a wee bit more. Try some more flat/block shading techniques before going into detail and texturing. From the wips, that I can tell, it seems like you had some good line work, and you did fill it out with solid colors, but from there on you went immediately into detailing. I would suggest keeping it more simple by designating a couple simple hues or fixed palette for texturing, as well as defining light sources. Again, this isn't really a necessary step, but it helps sometimes.
The dragon's egg seems malformed, and doesn't seem to retain a natural egg shape. The egg also seems to have a lot of light hitting it from it's left, but it's left wing still seems as dark as it's right wing. I'm guessing the wings were mirrored, or copy of one another? Looks ok, but I wouldn't rely on mirroring in the near future. Cut's off of dynamic poses for future potential. Not to mention, there is a thick black line that seemingly cuts off the binding of it's yellow underbelly, and it's green scales (it's where the neck meets the body, towards the our right side...stage right).
Anatomy wise, no one can really be an authoritative force over what a true dragon should look like. They're not real. However, IF we were to think from a realistic point of view, where it's limbs would serve as actual real life functions, then it's anatomy deserves another look. It's right arm seems to be attached to the right side of it's sternum, instead of the suggested shoulder joint. It's claws seem undefined at this moment, also.I'm also trying to figure out where It's tail begins, as the top portion of it, behind the left wing, seems to end abruptly, and magically end up below the right side of the it's head. "Very confused, I am, Hrmm." The perspective of it's head seems a little strange also. I would suggest tilting it's head a little further to it's right, for further dynamic-ism(totally not a word, but it sounds smart...Yeah, I'm an idiot).
I'm sure there's more, but I can't see anything else for now. I'm sure this will turn out great, though. Good Luck!