First of all it look nice the colors are really making a nice touch to the drawing. Now take what i Say with a grain of salt since im a beginner, but i think its because the face Element are not straight and youre not thinking of the face plane enough. For exemple your nose just seem to puck out of the face and not come from the skull structure. It really depends on what youre trying to achieve but even if its stylized anime girls, i think you should still think of the human face As a Clay structure with bumps and all,look up 3D model of the face plane. Im not good but i Hope this helped you. | Artwod Feedback