Great sketch! Perfect form of the face, nose and skin. Wrinkles could have been a bit better as well as the creases in the neck. Good detailed ear as well as the head and facial hair. Right eye seems a bit rushed and too heavy towards the nose area. The wave in the hair looks natural and very realistic but the area under the wave to the hair looks devoid of any hairline at all. The blank spot on the forehead looks out of place and there is no hair on the let eyebrow. Great thoughtful, happy expression for him.