As my plan is based on body suit + skirt, I need to create a pattern for a skirt. Once I have a basic pattern I will be able to modify it as needed to make it into a dress. To get a simple ballroom skirt pattern I copied a practice skirt I have.
DIY 30 minute Tulle Skirt tutorial and pattern great for costumes or anytime dress at Rae Gun Ramblings
The new modern skirts ballroom waltz skirts skirt big skirt 3 colors