ALL ARE GREAT.
just minor suggestions if possible to do over and/or for the future.
First, images aren't very sharp. Second especially for longer exposures w/o flash, see if you can use a tripod, or rest a camera on something.
CC:
#1, very nice composition, though as you said, it isn't straight.
#2 I can see a bride/groom portrait somewhere there.
#3 Nice composition - possibility of converging lines but once again, the image is too soft for my flavor.