If you plan to wall paper, which means you scrap on a speperate paper/card stock and then you adhere it to the white page in the book you will have to cut it down. For me that is one of the major draw backs with this style of an album.
People use the albums in several ways...
1. Don't wall paper scrap directly on the sheet
2. trim the paper to fit then use a good strong adhesive to stick it directly on the white pape sheet.
3. Buy page protectors, they slide on from the side. Then just slide the page in. I think you would still need to trim it but you could then move it around later.