Hmm... looking closely at it though... the mouth, the ears, the skin, even the hair, are a good rendition. But the eyes... it´s very difficult to capture his gaze. And they didn´t succeed it that department IMO.
"Hell begins on the day when God grants us a clear vision of all that we might have achieved, of all the gifts which we have wasted, of all that we might have done which we did not do" ~~Gian Carlo Menotti~~