Interesting. I just finished reading an article on panoramas in which the author suggested taking panoramas in the vertical position. That camera position allows you to capture a lot more sky which you can then later crop downwards. I would agree with others who find that the sky was clipped too low. It is especially apparent right over the top of the cliff. That land (vegetation) needs a bit more sky to grow into, a little more breathing room.
I do like the colors and the composition other than being squeezed along the top. The curve of the cliff draws my gaze out over the water to the far distant edge.
There is also a recent thread at this site concerning panoramas where I think Bill T shows an an example of a homemade system for holding his camera in the vertical position for panoramas.http://www.luminous-landscape.com/forum/index.php?topic=62420.0
The article I refer to was from Scott Kelby's book on Digital Photography, Volumne 3, p.123