I have also been gathering materials for the book. Mostly the pages will be like the LTCs with more embellishment and on a larger scale. A lot of the collage materials, ephemera, etc. I already had. Organizing everything so that I can plan layouts has been the major challenge. This is one solution I have come up with:

Keeping track of all the little pieces is also hard, so I am trying plastic baggies this time around. We'll see how it goes.
I forgot to mention - an early stage of the book is covering it. I wanted a look of something tough but well traveled, so I got a leather coat at Goodwill, cut it up, and used the largest piece to cover the book. It has quite a nice look as a result. I also used some Tim Holz brass corner embellishments to be corner protectors.