Sorry, didn't mean to imply nobody understood it, just a self critique of my crappy clip-artwork :p Also, you're right, there is a multitude of ways to describe that image, I knew it would not be my proudest puzzle.
In any case, correct! Now here's wave 4 :D
16. This one might need a Goktimus assist
http://i14.photobucket.com/albums/a3...ms/Slide16.jpg
17.
http://i14.photobucket.com/albums/a3...ms/Slide17.jpg
18.
http://i14.photobucket.com/albums/a3...ms/Slide18.jpg
19.
http://i14.photobucket.com/albums/a3...ms/Slide19.jpg
20. This one is designed to inflict pain
http://i14.photobucket.com/albums/a3...ms/Slide20.jpg