Do you have a reference of the character art ?
Things like petticoats and hoops are engineering and can be accomplished multiple ways and the costume itself will determine what is the best route. You could do it with a hoop skirt with many hoops or a petticoat that is a slip and has layers at the bottom, or a combination of both.
Disclaimer : This post written by a Grumpy Old Man
Actually in the pipes:
- Remaking Ser Loras doublet.
- Luke Skywalker, A New Hope
- Wind Waker starter costume in swim material
Eventually: Paul from Dune, Faramir, Harry Sullivan