Excellent work, I've been wanting to try something similar to this. I'll have to try this as a guideline for starting out.
I remember this tutorial a long time ago. I did do it, though I just followed very basic information and did my own design to it. I should find it.
Ignore the noobish stuff around it, it is old. That is what I got when just understanding how you created the actual shape and its design, I just changed it a little bit.