Thank you for kinds words! Good luck to other contestants! There is a lot of things I would like to still improve here, but the deadline is almost there. You can see the completed piece attached (subtle DOF, aearial perspective, color correction).
When I find time, I will expand on the piece, render it with 2x higher resolution (the scene is heavy: there are people and things on ground that you can't see at this resolution), and make an alternative version with different environment.
Best!