Like many first attempts at realistic drawing, the proportions are a little off. However, this is closer to what is usually real than what I have seen in the past. The lips need a little work, as they look like tiny motionless slugs. I would suggest studying the contours of a closed mouth first, using black and white photos to get a good idea of shading. Nevertheless, I must commend you for getting the hair and ears done very well. The hair is extending in a natural manner from their roots, even under the influence of the puff of wind you are showing. The ears have the natural contours and shadows, not just a line showing a 'scoop.'