Attach the ribbon--I used Liquid Glass. I made sure to cut it quite long so that it won't get pulled out with constant use.
Here are the pieces ready to assemble. Glue 1 covered CS piece on the front, and 1 on the back (to cover the ribbon).
Here's a shot of the inside front cover. If you follow my blog, you know that I like to wrap my patterned paper around the edges, and then finish it off with another piece of CS.