Grab a two-inch section below the original ponytail, and repeat the whole process, flipping hair through. The tails should be stacked, one directly above the other. You can stop here or, if you have thick or long hair, add one more flipped ponytail below.
(Take two invisible elastic bands and separate the hair into two ponytails, one above the other, in the back of your head. Once the ponytails are secured, take sections of each ponytail and, starting at the ends, roll them toward the head, pinning them in place with bobby pins. Roll the top ponytail first, then the bottom, leaving pieces closest to the middle for last.)