I finished this JSS mastercopy today and will start another one of his for the rest of class. I may try the next one in pastel to practice that and also because I only have 3 weeks left in this class.
Here's the side-by-side of the print and my copy. JSS would be proud of this since there is obviously something wrong with my version's mouth.
The purpose of a mastercopy is to learn how another artist would approach the subject. Painting, especially alla prima, has the history and technique of the artist embedded in the painting. You can figure out quite a bit of their style from the brush strokes and attempting to mix the same colors.
It's better to do this from an actual painting rather than a print, but I'll make that a goal for next year.