This is a wonderful book, which I fortunately got my hands on via Interlibrary Loan. So inspiring! It's one of the titles in the Couture Sewing series by acknowledged expert and Chanel collector Claire B. Shaeffer. (If you haven't heard her talk about her collections, check out this podcast by Threads).
This book is full of great information on making and applying trims to that Chanel style jacket you've just spent so long working on. Rouleau loops, piping, ribbon, self fabric fringe or selvage piping, insertions, embroidered edging; there is so much here to work with. Since it's couture focused, most of the work on these trims is done by hand, and really seems like it needs to be to get a good result. Quick weekend projects these are not.