Great start indeed. You can do wonders with the extrude faces tool. It's propably the most worn out tool in my toolbox

Anyway, for the lighting I'd suggest to use a slightly orange directional or spotlight with a high intensity value as the backlight (which actually could be the key light in this case). Then add slightly bluish fill lights to the front side with lower intensities. Also some greenish bounce light with decay from the ground direction could work. An area light could be suitable for this.

*edit*
And don't forget to pay attention to the shadows...