This is awesomesauce. I assume you keep on rendering the lighting as we speak. I just feel that you might need to take a second look on the lower left corners lighting, because right now, I read it as if your light source is about an inch outisde of the canvas to the lower left of the corner.. And then your lighting scenario isn't consistent >.< You need a drop shadow, and more lighting on the ground as well.
Anyways, I'm sure you're already working on this. ^^ Good luck, and I'm looking forward to seeing the next update.