Hi Steve,
I'd suggest you need to think about what you want the images to convey to the viewer.
Just taking these as a series of images of your country of residence, my thoughts on them are;
#1 - I like the angle (straight down the middle is
so clichéd), the only thing I'd change is perhaps the positioning of the human elements. I find the umbrellas and light angle hitting them distract - wait, or do they compliment; 'resonating' with the roof of the main subject, I can't decide.
#2 - You already said this needs levelling, but beyond that, it feels a bit too deserted, lacking in something definite to focus attention on; be that a distant car/van/truck or person/cyclist, etc.
#3 - Feels compositionally a bit cramped when viewed (small) in thread, but is better/ok when viewed larger in LyteBox. I think I'd try a tad more contrast overall, but appreciate this is one image that may look awful if the black and white points are set 'correctly'.
#4 - I think this would benefit from alternate positioning of subject in relation to background buildings and/or edge of frame, the tower is just a bit too central for me at the moment.
However, these are just my personal opinions and without knowing what you're trying to convey, either by narrative, title or simply because I/we don't know your 'style' yet, I appreciate you may not agree with all/some/any of what I've said
and that's fine.
Hope those ramblings are useful, Dave