Thanks guys. I was going for the rule of thirds on this one in composition. Using 2/3rds negative space....
I concur with that.
... The sky isn't black, but dark blue/grey. If you're referring to the foreground, well yes, i guess that isn't black either haha.
No, the sky shouldn't go black, obviously. However, the lowest part of the foreground (I think I can discern two levels there) can safely go there, even if it is not totally black in nature. Why? Because once the real world gets transposed into a two-dimensional thing, without its smell, breeze, cold, etc., the "2D thing" (photo) requires its own set of esthetic tools in order to convey the original feeling of being there. One of those tools is a silhouette. It is also a good rule of thumb to have a least some spots of pure black in the picture. Even if you would go HDR for the foreground, it would still benefit from setting a black point for at least a few spots.