I have to be honest here. Those eyes are horrifyingly ugly, and one eye is higher than the other. Also, why are the blush marks sticking out of the face as if the blushing was something solid? And that mouth... it's just way too low, you might want to move it up. You may also want to move the nose a bit more forward, because keeping it exactly in the middle of the face from this angle is only implying that your Sylveon's face is completely flat.