I love this tut too! I don't have a fancy torch (good 'ole Hot Head) and haven't been able to go into the amazingly detailed layers that Ryan does here, but I've had some pretty good success with 3-4 layers of glass and using these concepts! If you don't have a super-duper torch, don't get discouraged - give it a try anyway!
First tries - 2 layers:
Getting a little more daring:
Trying a "Nautilus" addition:
Getting crazy!!!
See? You don't know what you can do until you give it a go!!! I'm forever thankful to Ryan for guiding me...
De