Make your own sketch journal with holders

Step 7 Crawl, little inchworm...

Using the pen or pencil as a guide, loop the elastic up, take another fastener and thread the ribbon between the legs, pull the legs back together and thread it through the hole in the book, spread the legs out on the other side of the cover, pulling to bring the fastener head tight against the cover, holding the ribbon's loop in place.  Repeat until you reach the last hole.