Hey Peter, first off, I just want to say that the robots design is really cool. I really love the overall look of it.
Now, in regards to the focus, my attention was drawn to the shoulders when I first looked at the piece, and then the head as I followed the neck design.
I think it's because the shoulders are bigger than the head and lit as brightly as it that my attention was drawn there first.
I'm not sure if it would help, but perhaps adding a secondary smaller light source that is primarily hitting the head might help draw focus there instead (Perhaps the small person is holding a flashlight and shining it on the face). Or maybe adding another color to the head to catch viewers attention. Maybe even just lowering the current light source and casting the shoulders in a bit more shadow would help.