C&C per req:
These are nice scenes, but dynamic range makes really good exposures very difficult indeed. You go right from Zone 1 to 10, which means that there's going to be some sacrifice no matter what.
1. I'm afraid this is just the wrong place to shoot from at this time of day. You have a large black area image left competeing iwth a much brigher area to the right. What might have worked better would be a tight crop on the lighthouse, metering the brighter areas of the sky to render the lighthouse itself in silhouette.
2. I like the tranquility of the scene, but once again, exposure is problematic. Here there are a couple of choices. Use a graduated neutral density filter(G-ND) to reduce the dynamic range, shoot for an HDR or again, crop more tightly on the birds.
3. This scene begs for the use of either G-NDs to enhance the sky, or shoot as an HDR. Composition-wise, I would be temped to omit the rocks and bird in the foreground and concentrate on the clouds and water in the background. Don't forget to level your images!
Just my $00.02 worth - your mileage may vary.
~John