Hello: I like this pic very much, specially because I am a great fan of how planets can have cities clearly shown in the night side, yet nature is still a major component of the planet, like a great balace was reached.
LOL, still you must admit, art or not, most futuristic depictions of a city-scape world are all machine and metal, and Nature seems lost... Well, Star Trek's depictions or Earth are like this, colonized and fututistic but with the Earth's green prevelant. A ticket off world coming to you by 2030! Maybe 2020 if we learn to work together!
Our planet luckily is green and verdant, it is odd. We have been on this earth for eons yet from space you would not know the Earth has sentient life on it until you see the nightside of the planet. The mark on the Earth is near invisible on the day side.
Very nice composition. You certainly have a knack for planetary ring systems!
Two minor things if I may; I would put the craft(?) launched from the surface towards the moon in the background between the two bodies, because right now you might get the impression the moon as actually having an engine by itself! And it seems that your nightlights are also visible on the bright side of the planet; that you would usually not see.