because the two lights are separated in the strangest of ways, it hurts definition more than it helps it by creating two distinct shapes - an awkwardly flat characters and his neon-green outline. The outline is only that, too, it doesn't describe form at all. There should be parts where it is very thick and faint (planes towards the viewer) and very thin but bright (planes facing towards the right). I think you need to explore it as a light source and not as an outline, and also make the two lights non-exclusive of each others.