Pull all the hair into a pony tail. Remember the tuck-under knots from a few posts ago? You are going to do it on this, just pulling the hair through the opposite way, so the hair sits on top. Divide the pony with a comb, right in half.
Now that it is divided in half, pull the pony right through it.
This is what it should look like when it is all pulled through. After it is pulled through, pull the pony tight, so it is close to the base of the head & not loose at all. After you have done this, get a comb & smooth the hair everywhere so there are no bumps.