Very good advice from M_six
Just played with one of your other photos for fun since he beat me to the other one
I probably could have gone a little brighter. But don't be afraid to crop photos to get objects out of the way and to focus more on your subjects.
Also, rule of thirds, for some reason people find looking at the view finder as if it's portioned off into 1/3 sections and useing those to line up their subjects makes for more interesting/dynamic shots.