Link to the pattern you're considering ?
You've never used any pattern at all, or not just that pattern ? Are you very new at sewing in general or have you done stuff by making your own patterns before or ?
Separate skirts would get the best drape, I'm not sure you could do it any other way. I'd probably make the underskirt on a layer that goes all the way up into the bodice so you don't have to worry about any lines showing. If you tried to attach it to the upper-skirt it would drag it down.
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