Hi Mo.
I would just say the mountains and the sky look a bit flat. I would increase the contrast for both.
Also I would have separated the top plank of the fence on the left from the area with trees behind. At the moment the plank is blocking much of what could be an interesting clearing and the line of trees going left to right Maybe standing a bit closer would have allowed this. That's just my opinion. It doesn't mean it's the right :)one
Cheers
Enda