I just had an idea as to what may be added to the book.

A sort of psychological test type of game alike "the odd one out"
A way to train analytical/critical awareness.

Imagine a series of 5 pictures, one of them being a Dream Scene.
Like this:
- A picture of a downtown street with cars and pedestrians.
- A picture of a public park with some trees floating in mid-air.
- A picture of a car parking lot next to a wallmart.
- A picture of a bear plundering a beeshive in the forrest.
- A picture of a submarine near the bottom of the ocean.

Obviously a public park in which trees are floating in mid-air is a dead giveaway for being a Dream Scene. But it's okay to start easy.
As the series of images progress, they could become more difficult to distinguish;
The absurdity of the DreamScene could be reduced and the Dreamsigns could become more and more subtile and hard to notice as the series of images progress.

That could lead to a series of images like this:
- A picture of a drunk homeless man with a bottle of whiskey sitting on the street.
- A picture of a ladybug on a bright yellow flowerpetal
- A picture of a man fishing from a boat in a lake
- A picture of a woman doing Yoga amidst a street full of busy, stressy people
- A picture of a Seagull chasing after an Eagle

The last one is still obviously the dreamscene. But dreamsigns could be infinitely more subtile.
Doing these tests regulairly might help you more easily recognise the Dream state.
Just my little contribution.

PS:
I'd love to draw illustrations and diagrams for this book so let me know if I can be of any graphical assistance to the book. I'd be glad to help.
LooseMinded on deviantART >> My drawings