(Glare from the overhead lighting on the face)
Also, I've been flummoxed all along as to why the value suddenly breaks down the middle. Today I realized why: in the reference photo, Robert's shirttail peeks out from underneath the overshirt on the left side, and I had chosen to edit that out. It's a regular shirt that buttons down the front, and that's what's creating that break. So— do I paint the shirttail back in, or do I smooth out the overshirt?