A3DLover, that background in your image is just GORGEOUS !!!
Heck, you could even get rid of the spaceship and have a beautiful image…
And in the light of an honest critique only intended to help, and in no way intended to offend anyone in any way whatsoever….
Personally, I think the spaceship totally ruins the image. The lighting on the ship doesn’t match the background lighting, and is far too well lit, especially the front of the craft. There’s incredible drama in the background, but the ship’s lighting is just blah….
You might want so move the ship to off on the right hand side or something and make it really, really small, to give a sense of drama of impending disaster or something as it heads for that gnarly planet. Or just make the ship so small you can’t see it 
But seriously, step back a bit and consider what the real sources of light would be in that situation. In space there’s only one or two light sources, which are the sun (or nearby stars or whatever) and any reflected light off nearby objects/planets. There’s really nothing that would light your ship like that.
And if you are gonna have the ship in the scene, I think you’re missing an opportunity to show the interest of the ship’s texture by having it all a dull gray.
Anyway, I hope that doesn’t offend you in any way, nor does it offend anyone on your behalf, nor does it offend anyone who might like gray spaceships.