This is the 3rd charcoal drawing I've attempted using the proportional divider, the first copy of a Sargent portrait. My source is also in the picture.
I am struggling with making corrections because each correction seems to create the need for another one. When to stop, consider it done, and move on to the next one?
Thanks for everyone suggestions before; can see some improvement. I plan to do a few more Sargent reproductions from the same book and then see where I am.