C&C per req:
1. This is the only actual wedding photograph, the other three are wedding-day candids. Equally important but a totally different category. First, as mentioned is the crop. The brick structure is very interesting. but there's way too much of it. This should be cropped to a portrait aspect with a little more room above their heads than they have at their feet.
Next: Auto-program mode? Really? Sorry, that doesn't cut it for wedding work. You need to be able to control your exposure and avoid things like the blown highlights on the wedding and flower-girl's dresses. Remember to meter for the white!
The pose idea is good but there are a lot of picky details that have been overlooked: The flower-girl is slouching, the bride's eyes are partly closed, and the bride's maid to the right of the bride has her arms doing something totally different than the other three (and is that a bra-strap showing on her left shoulder?). As well, the bride's maid at the far left needed a moment to straighten her hair, and doesn't really seem to be looking at the camera.
Lastly, your choice of equipment. This image really should have been shot with long glass and a large aperture, and with the people separate further from the wall; it's a very strong element and is distracting from the people, who are the subjects.
I understand that this may sound very picky, and doubtless some of it was beyond your control. Overall, it is a nice image, but I'm hoping that your next one will be even better!
Just my $00.02 worth - your mileage may vary.
~John