Step 7: sew in the pages!
Pin the pages into the center of the book! Make sure to pin well on both sides - felt tends to move lots when you sew it. :D
Mark the middle of the pages in some way - I'm using an air erasable pen! You can barely see the line in the first photo.
Sew down the middle of the pages, backstitching at the beginning and end.
Now you have pages! We're almost done!