See her blog here (click on Tutorials on the right to see instructions). If you have lots of time, also click on the Images and Exhibits - lots of cool books, and most have a link to that particular artist's other works. I could be there forever!
I searched my kitchen for a small box to use for my cover and found this tea box. I used mostly brown kraft paper for pages (I seem to get a lot of it used as packing paper these days). My flaps were not like hers on the butter box, so I ended up making end papers with thicker craft paper on the insides of the covers. I just love this little book. Very cool.