Now...ignore the ratings for this, if you will please. I think that the piece of art is great, but there are some minor hiccups. Firstly...you can't really see where the white of the eyes are so it looks like the eyelashes are stuck to her skin. Now, I do like this style of art, but one thing I would say it that there's sometimes shading where it isn't needed.
One problem I can see is her eyelashes. On the left side there's two sets of eyelashes, but on the other side there's only one set. But only one last thing I should mention is that in some places where there should be shading there isn't. For example, Just in front of the ears is a good place for there to be a little bit of shading...but for the art style that you're using for this picture, it isn't crucial, though it would be a nice touch because it bothers me slightly.
Overall, I think this piece of artwork is brilliant, and that there are a few things that could use tweaking.