Does it already have a lid that lifts for storage.
No, just an empty space. I can access the interior via a zippered bottom. It will be easy for me make a stable bottom for it.
You are going to need a piano hinge and some plywood to make a top. You will need to attach that to the footstool with matching fabric.
Hi Julie, here's a link to a video that will show you exactly how to wallpaper your risers.
Can you just put blankets in it? Hard to know what it looks like.