Exquisite, highest resolution, concept art, profile view, (Leonardo da Vinci:1.9), inventive, curious, contemplative face expression, hair meticulously rendered, right ear detailed, invention sketches surrounding, quill pen held delicately, monocular, golden flecks details, Renaissance era, Florence Italy setting, warm amber light, subtle shadows, lifelike, blend of oils, fresco technique, fine by: Leonardo da Vinci, Hans Holbein the Younger. 
(Leonardo da  Vinci:1.9), inventive mind at work. 