Does the bride have a scar on her right cheek? As for the photos, I am seeing them all centered and that does not work for all shots.
On number 1, that light is just plain distracting. Need to find a better angle/crop to get rid of it and other distractions. It took me quite a bit of time to figure out that was a piano they are sitting at. WIth such a great prop, you need to either accentuate it, or get rid of it.
#2, the window is competing since it is the brightest part of your frame. If you could crop it a little tighter so the light is gone, I think it would help.
#3 and 4, the rail of the stairs is right in the middle of the image. If you had taken a step to your left, you could have gotten the bride and groom both completely in the image with out the rail hiding most of his left side.
Keep practicing and you will see these things instinctually. I still have some of the same issues with putting things in frame that stepping one way or the other would have solved. The more you shoot and practice the easier it is to see it at the time of shooting.