Fantastic art bro, couple of things I would suggest fixing on the commission.
Her head and body directions are contradicting each other, are you building a constructed skeleton with ovals and cylinders to see where each part of the body goes? if you nail the construction at the beginning the rest should be a breeze. Michael Hamptons book figure drawing he explains there very well how to construct your figure so it will look solid, excellent book.
Another thing is the angle which would affect how much of her jaw we would see from underneath, you painted the eyes and the nose in the right angle but the chin and jaw are from straight angle.
Keep going bro as I said on DA you are blowing my mind with your works lately.