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What a cool shot. One day I need to get me a TSE lens! You got some cool clouds and some great color in the sky which contrast well with the white of the salt pans.
I certainly like the look of this a lot, but Scott does bring up an interesting point as to the composition. For me, the sky is really taking center stage, the salt pans just set it up. So I do think an option would be to crop a bit off the bottom. You were shooting more in the uplifted salt pan area anyway, so to lose a bit of the detail at the bottom, when one can still still the uplifts between the polygons further on, doesn't hurt the shot.