Ok you want a review eh? Alright You got the Review whore at your service.
Lets start with some troubling issues.
The hands hold one of the largest flaws in this entire thing. hey could really use a overhaul Her right thumb isn't bad, but the gingers really don't have any depth. The left hand is generally alright, but its having problems showing how the palm of the hand somewhat wraps around the hip.
Hands are tricky though, You can study and practice them for years and still not get them right. So just keep observing them and practicing them.
The hips, with this pose, shouldn't be that even. Her right hip should be elevated a little more to keep the proportions a little more accurate. With them at the same horizontal level it makes her left leg seem all the more longer than it should be.
This flaw is pretty minor, and most viewers wouldn't really notice it, but they would still feel like something was off.
Moving back up the body here, the breast, her left one is wildly flat. You shouldn't lead the line of the breast directly in to the shoulder like that, even if they are remarkably small. You should have curved it up and left a little of the back showing to lead up under the arm. This would have also left you some areas to play with some deep shadows and some better highlights on the breast.
I'm not going to dig in to the head too much considering you have already acknowledged it was large. Intentional as it may be, it could use a slight shrinkage. Something to keep for future reference.
I need to bring up this, your signature. I understand you want people to know this is your work, that is fine, I have no qualms over that, but don't put it over your character.You can make your sig as big as you want, bigger than your character even, I don't care, but don't cover any of your subject with it.
Now some good things. The coloring is good, I like that part. The lighting is nice too. I personally feel you could have been a little stronger on some shadows and highlights, but this does just fine.
The costume design and overall character design are appealing and effective.
Other than a few small flaws, this piece is alright.