Thank you, I'll fix it

The skin lighting is somewhat odd. It seems very dark and makes it difficult to see his features properly. Maybe try to add some of the blue lighting onto his head. The light should illuminate certain parts of the face. Also, on the right side (his left side) of the face, you could add a bit of more saturated green to show more lighting, as your current Yoda looks a bit flat. See the effects of the light here