before you even think of submitting for approval, you can't have two different textures on opposite sides of a flat block. and it shouldn't even be a flat block either, make it one wide. and never, ever use black ever! it's the worst color to put on a model this light.
i like that you made her bipedal instead, it really looks a lot better this way. but the tail kinda ruins it for me. it shouldn't be so thin and sticking straight up like that, it's a very unnatural pose and looks like it would be very uncomfortable.
i'd suggest making it a little thicker and lowered towards the ground.
also, the eyes look a little awkward since they have no outline. give it a little darker blue outline around the eye (not a whole lot), just a teensy bit darker would set it apart from just being a marking in the pattern. maybe add a teeny bit of a highlight in the red of the eye as well, just to add some life to them.