Wow! Amazing architecture! Certainly, the sun might have been a better position to enhance the lighting, but, under the circumstances, this is quite nice.
Hi, in terms of composition this is fine. But, i think you took this just after midday, which is why the colours are a little washed out. This spot, early in the morning when the sun is over the back of the island presents blue cobalt skies and stronger tones in the remnants of the caldera and the houses. ypou can see lots of burnt out and reflected white light on all the roof tops for example. these are the mistakes i feel i toobmade in my shots from this point, just a good excuse to go back if you ask me!