I think the only thing that I can see that appears a little off to me, is that this character requires a little more definition of musculature in the arms and that the hands are a tad thin, it gives them the impression to me that they do not quite fit with this character. A larger persons hands tend to be plumper and less delicate than say a thinner persons would.
Also is that a tail and if so is it coming out of her back or from under her skirt? If it is indeed a tail, a proper functioning tail on a human, or humanoid like this, would protrude from the body just above the beginning of your butt crack, maybe a little higher.
As this is not your character, I believe that is what you said above, I will not rate Originality higher than one star. Please do not take that as an insult to the work you have done on this piece.