This is a lovely shot. The colours are great and the motif is interesting - it grabs my attention.
Let's start of by talking about the nice balance you have managed to achieve between feature and featureless, this meaning, that close up you have a lot of detail but then it slowly declines to a silhouette of landmass - brilliant.
However, I find that it would be a better idea to take this picture with a horizontal perspective, so that you can see the rocky volcanic shoreline, which then, ends up with the same silhouette to the far right.
As previously said, I think you have done very well to bringing out the colours and it is partially why this picture is so striking.