Heh, I've seen that render used a bajillion times.
I think it is too green. You can't see a lot of details in the background, which kind of makes it boring. The render doesn't seem to be blended very well either, and the sig is too long, it's past the forum constraints.
I don't think it needs to be that long anyway. There is a lot of nothing in it.
But since you aren't done tweaking, I'll wait to see what turns up.