This Hairdo starts out with a high pony tail.
Take your other hand and wrap it around your bun and pinch.
Pull your first hand out.
If you want the bun to be fuller then pull the bun up.
Put the new hair band around the bun and make sure that it is below the existing hair band.
Wrap once.
If your child has medium long hair, this may be the end. Go ahead and finish with the hair band until the last wrap. Take the hanging hair and pull it around to cover the hair band. do the last wrap to secure that last piece. Jump down to the bun part.
If your child has long hair then continue on. This is the hard part.
Place the pointer finger and thumb around the bun while holding the hair band.
Loop the remaining hair over the second finger and secure it with your third finger. Hold it with your pinky finger.
Wrap with hair band.
There should be a piece left, about 4 inches. Pull that around to cover the hair band.
Pull the bun out how you like it. This is an important step.
If you want the whole bun to be more secure, feel free to add more bobby pins.
I personally like it left floppy just for a comfortable, fun daytime hairdo.