This is really neat! As I was reading through I was going 'but isn't this how everyone works?' xP I'm not quite as visual-thinking impaired as you describe, but still have very poor visualization skills (working much more on not so much "images" as concepts and sort of... mental sensations). When I'm making a map, I'm constantly mentally checking in with myself to see if I'm capturing the remembered sensation/effect. In short... I sort of use the method you detailed here, just not quite so explicitly or deliberately as you do! I hadn't really realized this until reading your tutorial, definitely some good advice in there!