I like this a lot! You've done something that I rarely see in space-related art: The lighting and positioning of the planets is actually possible, rather than being thrown in with no regard to light effects.
The falling leaves that extend outside the frame is a nice touch, too. Because they have some backlighting along with the figure, it makes it seem as if they have just "beamed in" from somewhere.
Two minor quibbles: I'd reduce the backlighting for the first row of hills so that the outline is barely visible, and I'd tone down or fuzz out the mountain detail -- it's too clear and well-defined for the distance.
Favorite.
