covered book board, inside and paper sections:
The cover is from JacksonFabricArts. The back is a buttery dark red leather.
I used nine different types of paper. Canson pastel, drawing and bristol papers, Strathmore watercolor & drawing papers, Canson canva-paper, Mohawk super fine, rhodia, and Canson recycled drawing and mixed media papers.
The binding is an exposed spine coptic. It's very simple. I really should learn to do more intricate bindings at some point. :) As you can see, the section thickness varies because the paper thickness varies. I did this intentionally.
This should be a fun book to sketch in.
I learned this sewing from Non-Adhesive Binding Books without Paste or Glue by Keith Smith