I really like the mood and vapor shadows. I think with an additional greyish PF mask over the shore mask you could decrease, and patch up the amount of reflection. I like the difference in color of the sunlit and shadowed cliffs, but there might be too much difference. Shadowed areas look like chalky indeed, but sunlit are more like sandstone, and sun is not that low (15-20ยบ or so?). But at a glance and without nitpicking this is really a very nice change!