Oh, as Sci-Fi fan I've overseen this beautiful one also..!
Your scene is cool SteveR, in lots of aspects, i rly love the add of the spaceship.
But watch out your framing for the things which are important to your scene.
Most of the things which makes your picture interesting or giving main impacts are jammed left, right and on top, they need more "room" or "air to breathe" .
Zoom out a little, tilt your cam a slight bit up and see yourself..