Value study after John Singer Sargent

Hadn´t posted anything in a while, so, here´s a value study after John Singer Sargent. Already working on another batch. I was once told that is a good idea to work on several pieces at the same time, so, if you get stuck, or burned out with one of those, you can go to the next one and keep working with a fresh eye. Seems to be working well for me.