I am an artist, animator and video editor so I can give guidance as far as that stuff goes. Your art and video work looks pretty good so far.

Something I would like to see included in the book is the gravity reality check just like earlier books discussed why the nose plug rc works. I was talking in another thread about how the user Hukif uses it to great success. It works by feeling the subtle differences in how the body feels while dreaming. I would love to see research confirming his hypothesis that it is caused by interference from your sleep paralyzed body and confirming that it works consistently between dreamers. This would work well with your book because it would be included along side discussion on how gravity works in real physics.