thread the needle!

I've always loved this twin move and wondered if at all i could do it....I could just barely contain myself after getting this move down yesterday for the first time.
And for my next trick....I really would love to know how to do 'the waterfall'. There are so many great tutorials out there. My go-to site for tutorials is www.hoop-trix.com where it's all organized so beautifully.
Happy Hooping!