This took me about an hour to do, and I'm going to wear it over my clothes, as part of steampunk cosplaying.
1
Start out with a belt or ribbon. I used a purse strap.
Take your tulle. You should have somewhere between 2 and four yards, depending on how big around you are, and how long you want it.
3
Cut your tulle into strips twice as long as you want them to be.
Fold them in half, and wrap them around your belt/ribbon and then pull the end through the loop created by folding them.
4
Repeat this until finished.
5
Wear over or under clothing!