Thanks for finding those pictures! Hopefully it's now easier to see for those who don't care too much about art why hyper-realism is so much easier to achieve than, for example, any of the portraits here: http://plbrown.blogspot.com/2017/01/yes-its-real-thing-museu...

That sketch of a live girl shows his real skills and I found it to be much more interesting than his photocopying, even if it looks like a real 11-year-old's drawing. Thanks!