Oh...my...GOODNESS! It seems your grasp of lighting just keeps on improving! I love the darkness around Aun and the way that the light looks so cool. Just one thing, is the light supposed to be coming from beneath Aunno or from the moon? Because if it is supposed to be coming from the moon, then the lighting should be different, it should be reversed from what you have now.
But it doesn't matter, because it's easy to presume that he's sitting above a light source. This is gorgeous.
I like how his eyes are glowing, and also the shiny places on his clothing and body :3. And the different shadings on the moon are awsome! Wish I could leave something constructive, but there isn't anything to criticize .