There are a lot of interesting elements here, but they aren't tight enough--I mean they aren't actually physically close enough together. I think there is too much space wasted on a sky that has no interest. to fix this, I would normally suggest that you crop more of that sky off, but that would leave you with an aspect ratio that is way too wide for most presentation formats. The only thing that I might recommend, and it is considered unethical by some, is to crop more of the sky off and compress the image in the horizontal axis, possibly using content aware scale. This would maintain the good aspect ratio and reduce the amount of space used by a blank sky. That might tighten it up.
Here is a quick reformulation of the aspect ratio.