All the World's a Stage a 20x29 oil by Shirley Fachilla
If all the world was literally a stage, then up-lighting would be a commonplace. But most light, natural or man-made, illuminates from above. Stage footlights are a wonderful exception.
Why wonderful? Because for a painter, up-light changes a subject with a simple relocation of the light source (an easy thing to achieve in a studio). Use up-lighting and the usual shadows disappear. The painter gets to explore the form and shape of their subject in a very different light and thus from a very different perspective.
Seeing the human face in that different light can be equally illuminating for the viewer. Toulouse Lautrec, Degas, and a painter you may have never heard of, Everett Shinn, knew all about that illuminating different view.
No stage lights were involved in my painting just a simple readjustment of a flood in open studio.