Hi Kezzabee,
You may find some backgrounds you like for a wedding photobook in the link below. We don't currently have a set designed for weddings, but it's something I would like to work on soon.
I will post the link here when they are ready.
You must follow these instructions in order to ensure you save the backgrounds correctly.
Click on the background paper you like.
Then click the words "Full Size" at the top left of the image
Then right click on the image once it's fully opened and choose "Save Picture As"
Make sure you make a new folder and save it close to your photos.
Here is the link
Suz