I need a family wedding photo seriously improving

My sister got married in summer this year, and got a bad photographer for the wedding. We did get a photo of the whole family together but we didn't get any direction for posing, or positioning or anything, and the photos are not really very good.
I was thinking of getting the picture edited to be more appealing, and having it printed on a large canvas for her Christmas present.

I think it would be nice to get perhaps get us all squashed together abit more, particularly everyone on the left side of the image, all tucked in abit more, to get the bride more central than she is. The woman in position 4, it would be nice if we could minimise the bags under her eyes abit. Im front and centre, with a bald head and purple tie, and i would love to be a shade slimmer, even if that is just tucking me behnd the groom abit. :) if we can do anything about those fucking sunglasses then id appreciate it. I understand we don't really have image of her eyes behind it, but anything to make them less black. Maybe we can get rid of the advert boards in the back, and maybe warm up the colour pallet abit to make it feel abit more sunny,