Dan,
Forgive me for dragging out my own work to illustrate my point and though the lights on the shadow side of this face look a little too light (the digital file is a higher contrast than the finished work) I offer it to demonstrate that you can get away with those "highlights on the shadow side if they relate to the light source somewhere from our left and are faithful to the underlying form.
I think you will see a distinction between source light and reflected light. You have tackled a difficult lighting situation.
Jim
|