If you dont mind me saying I think you got the lighting a little off in this one, the planet it looks like its comming from the bottom right, where at the ship the lighting looks like its comming from the upper left...other than that good render.
Not a problem, believe me I have my issues with lighting as well, you can look at some of my earlier stuff (trust me you can tell which ones) and see I didnt have a handle on it yet.