I think it is looking ok . I want to suggest you that you should try another method also and then find which is better for you .

This is cool, nice drawing! Perhaps the mouth looks a little small, but that could be the model!

Love the expression! I would spent more time in the shadows and core shadows, making them a but more refined, as now the shadows/reflected light are too similiar with the actual light, so it can get confusing. I reccomend Dorian Iten to study shadows from, Proko's video with him: https://www.youtube.com/watch?v=6vapw6n6FyU Keep up the good work!