From what I could understand from the photos, it looks like a Tutu with fishing line in the hem to make it wavy. I think any tutorial for a Tutu would work. There are lots of them on
http://www.youtube.com so I would just search for Tutu skirt tutorials. Basically, it is layers of tulle ruffled or gathered & sewn into a waistband or onto a bodice with some type of fishingline sewn into the hem.
Marty
Brighten each corner where you are ... smile!