I like these shots. I like the colours and textures in the first and the composition of the second. I'm not sure that you achieved your objective of highlighting the island as it just seems too far away. With the first, taking the shot from a higher angle may have helped - less rock in the foreground and more sea - I don't know.
Also I'd perhaps add a little more contrast to the second image.
I like the photos very much. The colors and textures are really very nice. I do agree with Dave that the island does not come off as highlighted. But it adds a nice touch to both photos.