This next step helps keep the wooden panels locked nicely in place instead of sliding around under you while you sleep. With your configuration set up just the way you like it, look underneath the overhang of your plywood sheets and use a pencil to mark an outline of the bookshelf on the undersides of the panels. Then remove the sheets of plywood and cut eight 2″ pieces of velcro. Adhere the velcro to the top edges of your bookcase in eight equally spread out locations and then peel off the sticky backs. Finally, replace the plywood sheets ever so carefully and press down so that they stick.
After your velcro is all set, flip up the wooden panels fill up your new storage bed with items you want to store.