Let’s see how to draft the pattern of this skirt.
Start from a basic skirt with full front and back to draw the asymmetrical yoke.
Draw the slash line for the yoke/ruffle and square down the lines from the darts for the dart manipulation.
Cut through these lines.
Close the waist darts opening their volume in the bottom cuts.
Fix the ruffle line and the hem.
Separate skirt and ruffles pieces and draw some slash lines on the ruffles to add volume.