Quick comments:
#1 - more dof needed. I like the focused area to be at the front of the frame.
#2 cool shot, but the brides face isn't exposed well. Turn the flash off. See next comment.
#2, #3 - expose for the subject, not the background
#3 what's with the space above her head? It adds nothing to the photo.
#4, cool, try B&W or sepia to make it something special. Anything other than a plain photos is good here.
#5 Nice, i'd like to have seen the bride like that
Technical competence is essential, you'll get there with time. Artistic talent and making people comfortable is arguably more important, that can also be learned.
A good start.