Pretty much self-explanatory
I probably could've used a reflector for the opposite side, I also tried moving the light straight on to get the shadows to fall-off from both sides, but my son was really tired and...not amused and the shot didn't get done. Anyway, I used this version instead, thought the expression was the best one of the set.
AB400 with silver BD camera right. F16, 1/200, ISO200
C&C always welcome.
And what a cutie! 

