As I've never made a scrapbook becore I did some resesrch into it. The best way that seemed easy enough for a beginner was to cut out 5 triangles, stitch the felt together then use long skewers to weave in and out of the triangles. The more pages the wider the spine. I do want the book to be quite big, A3 size or there abouts for space and for the pop ups to be detailed and bigish.
Once the book has been stitched together I can start to add the pop ups qnd story to bring it to life.