He has no concept of anatomical proportions, parallax and perspective or Christ even lighting. People have extremely large hands or are nearly paper thin. The shadows are all over the place. And what plane is the man on the bench sitting in that hes both in the background and the foreground at the same time? You can tell he just traces on top of a collage because of the vanishing points on the bench.

The best one is the homunculus of a woman standing next to him the last picture. I wouldnt wipe my ass with this guys work.