Hi Soha,
I felt the horizon was a little tilted, so I rotated it anti-clockwise by 0.5 degree. Then I cropped to so that the sky was 2/3, and the FG was 1/3 (Too bad I had to lose some of those salt polygons)..Adjusted contrast and brightness, followed it with USM.
Hope you don't mind.
Cheers!
~Ashish