Help with the Idea Atlus

I read the book “Sketch Your Mind” and I loved it but one of the things I wish were included was a visual idea on how to create a Idea Atlus. In Chapter 5 we get a goo example of how to create everything including links to the authors youtibe channel but we dont get an actual view on what it looks like to create an idea atlus. He gives us the general philosophy which is to start with the whole then read a part but there is no concrete drawing. I would like to know what a well organized one looks like.