Almost through to 90 days, but life got in the say and a couple of forgotten days has turned into a couple of weeks. This has been the best challenge yet and I can definately see improvements.
New face sketch from photo
More playing with the tablet and struggling with open mouths. I'm not unhappy with those eyes though.
However when you compare them to a trace (below) I can see for the first time that issues with the eyes from this photo are in placement and layout. Second image is further development of the right eye and nose with trace image removed.