It now looks less like beach. Please watch my other thread. :)The white temple doesn´t really fit into the map. I would make it out of sandstone if you want to have it on sand.
To make the map less beach-looking do not use that much sand. Maybe remove the palm tress and build some others, also use grass and gravel. You could build something out of greeks history. Do some research and focuss more on the greek theme than on the tropical theme. :)