1. Draw a horizontal straight line as the belt of the ballet skirt.
2. Under the belt, draw a downward curved arc, which will become a wrinkle of the skirt.
3. Draw a second downward curved arc and connect it with the first arc. This arc needs to be larger to form the hem of the skirt.
4. Draw a smaller arc above the hem, connect it with the upper pendulum, and then draw a similar arc, slightly leaning inward, as the upper fold of the skirt.
5. Add details, such as drawing some curves in the folds of the skirt to make it look more real.
6. According to your own preferences, you can dye the ballet skirt with color or texture.