Hmm... your theme is a bit vague. Why is there a "station" in the sky? What is the story of it? Why are the armies fighting for it and who are they (the armies)?
Also, symmetry doesn't work too well for CC maps. It makes for kinda boring gameplay, usually.
To succeed, a map needs one of two things: an interesting theme, or interesting gameplay. Right now, both aspects of this map are a bit "meh". I'm not saying this to be mean. I know how hard it is as a new mapmaker to come up with something new and original, when there are loads of maps in CC already... But, you should think about the process of mapmaking like writing a story: figure out a background (why it happens), the setting (where it happens), time (when it happens), the characters (who is fighting who)... when you have all these you can develop a solid theme from them. Then you can use this theme to build the gameplay around it.
I'm not saying you should scrap this project, but you'll need to go "back to the drawing board" and develop the idea quite a bit more. Or you could take my advice and try to come up with a whole new idea. Either way, good luck with your future prospects.