Lovely set. First is my favourite but looks like some halo’ing crept into the clouds on the right hand side of the island when you brought through the lighter exposure. Easily fixed and would be worth the effort
Yep compression does that from time to time . One other thing I would suggest is blending the brighter exposure of the rocks more gradually and using the light more naturally. For example , the light coms from the right so to the left of the building shoud but in shade but its one of the brightest parts. I think if you use and blend the light better in accrdence with the light directing creating light and shadows would definitely improve the sense of dept in the shot …..