Your entry is coming along nicely. I didn’t catch the story, but it seems like people are living in outer space now right? Does that mean that the Earth can no longer hold people? If so, I think it would be cool to have the earth in the background look dead. So, these cities in outer space have to constantly be reminded of the dead earth behind them.
Some minor things to consider: The perspective is a bit too tight. I feel like the earth and the ships are all too close together, maybe some type of atmospheric distortion (even though there isn’t atmospher in space) , but just making thing less saturated as they go back would give this effect. Your textures are looking nice, so I’d stick with the plan on that, but maybe add lights here and there. Lastly, it needs something to give us a sense of scale. Can’t really tell how big things are.
Ok, hope some of that helps make your entry a super success! peace out!