/cgl/ - Cosplay & EGL

Could anyone give advice on the skirt here? I've tried a few patterns now and none of them seem like they're going to really give the width of her skirt. I'm not sure if I'm making this the wrong shape or what. The bigger I make it the more it just looks like it's going to stick out in the back.

Someone did suggest wire but I'm not sure how to really do that.