I don't think the fisheye looks the best choice for this scene - it's given you big exposure problems which you've tried to fix in editing, but rarely does burning blown highlights ever work and you can see where you've tried to paint them back. It's generally best to try and keep the sun out of the frame, and a longer lens would let you concentrate on one area of the scene - the mountains to the left are an obvious shot as are the trees to the right, but both together there's a big empty area in the middle of the shot and nowhere obvious to look. The foreground isn't working for you either, better to eliminate if it's scrappy