How do i make a skirt and sew it on?

Question

make a skirt to be attached to a leotard and sew it on, so it looks decent and not tacky.

Answer 1

Difficult unless you use a fabric with elasticity matching that of the leotard, or you otherwise allow the waistline to expand to the diameter of the hips.

Are you trying to do something like a skating dress?

http://www.jalie.com/sewingpatterns/figu...

Answer 2

Very carefully I would think.....