With the reflection of the sun in the water I don't think it needs much in the foreground. Maybe a bit of a crop from the bottom. Possibly pull in a bit tighter could have been a better shot.
The second one looks too centered. A bit of something to either side would have made it a bit more interesting. The subject and the shot is nice but composition could have been better.
The third one looks good except cutting off the building on the right kind of takes away from it. Perhaps pulling back on this shot would have been a better one.