The effect is interesting, but not spectacular, and certainly not worth a separate download at this
price.
The original Tommy Wonder approach was different (not appropriate to provide more
details), and therein lies a reason to have a separate lesson. This download does not do more than
touch on Tommy's method, instead focusing on Dan's revision.
I gave it 4 rather than 3
stars, as Dan is always a great teacher, with good pointers. His method does require arts & crafts
(although less than Tommy's), and he does a good job of explaining those.
Also, Dan
provides the relevant artwork, which itself also helps justify the 4 star rating.