1) you dont seem horrible at urban places to me! this is very atmospheric , I love the colour of the sand. Dark, as always , Santorini 2) I really love the litle boat 3) I miss Greece right now I'm Greek and studying abroad . I miss the sun
one little comment i would add is on the top right corner, there are objects that are cut out. personally i believe cropping them or editing them out would do the trick. but surely watch out next time for such objects that could interfere with the shot in a negative way. and find a better angle to shoot it so you dont need to do post editing later on.
i believe with the equipments u have u cudnt have done it better,may be abit more aperature as u said but it wouldnt add much diffrence honestly,
timing wasnt perfect as the sun was a bit too strong, and really all u need to do is a bit more post processing and some cropping to the top part with the boats.. have faith..we all didnt wake up one day and became what we are now,,,u know that well too!