This is a great concept. Composition is good; the quality is not the best, the editing on the starter is rather obvious and the "sky" is a bit pixelated. Also I could be wrong, but isn't that the earth rather than the moon? That bit doesn't matter though. Overall I like it, just wish you hadn't "blanked out" the texture on the starter.
Oh, and could you also note in your comments which starter image you used, to make the judges job easier. Thanks.
No need to be sorry! One of the puposes of this contest, at least for me, is to encourage new people to contribute to the site. I see that your two contest entries are your first contributions (I think) so that means this goal has been acheived. You obviously have great vision, and this image is really very good, just not as "polished" as it could be. Hopefully as you spend more time here you will learn the tricks that can help you to utilise the software you have to it's full potential ( I know I certainly still have a lot to learn) :-)