#1 - That sky looks beautiful and as such, should have taken more precedence in the photo. City-line should have been down further in frame, there's a lot of water that isn't doing much for the photo which I assume was taken to emphasize that gorgeous sky.
#2 - That ^^^
#3 - Slightly out-of-focus and weighted too heavy to the left.
#4 - I see what you were going for here. Because of the heavy contrast between light and dark due to the placement of the sun, this would have been a great time to try an HDR bracketing technique. The errant branch in upper-left distracts from the photo. Good try though!
#5 - HDR would have worked here as well with perhaps a seven-stop exposure bracketing (less or more depending on what's moving I suppose. You don't want to do too many different exposures if there are too many things moving around).
Keep up the practice, you'll get it. I believe in you! Welcome to TPF!