Gleb explains how focusing on the flat shapes in your scene help you improve your composition.
Curiously, leaving a figure unlit is sometimes the best lighting setup you can imagine. For me, it was one of those aha! moments when I noticed that lines, shapes, silhouettes can be more interesting than the three dimensional objects themselves. The question is: can you reset your vision, like creators of Limbo did?
My only advise to Gleb: practice a bit on your pronounciation of 'focus' ;-)