To create a Figure 8 Bun, start off just as you would to make a regular bun, gathering your hair into a pony tail and twisting. As you begin, make your first twist as usual. On your second go round, make sure that the hair goes just under the coil before it. (Most buns go around each coil creating a cinnamon roll type look). See picture below to see how the second coil goes under.
Continue wrapping each coil around and under until you reach your ends, then tuck the ends under. The bun should look something like this.
The next step is to grab the top coil and pull it upward toward your scalp.
To secure, you can use hair pins, hair sticks, or Ficcare clamps. In this picture I am using a hair stick (which is really too long for this style, but within arm's reach during the time I was taking these pictures). When you use hair pins or sticks, the key to getting a secure hold is the direction you place the tip(s) to begin with. Note how I am aiming up in the first picture here.
Once the tip is placed against the scalp aiming up, turn it back down in the opposite direction, and gently slide.
You can aim your sticks different ways to create different looks. In this picture I aimed the whole bun a bit sideways.
Here is a picture of the Ficcare type clamp slid through the Figure 8.
You can find Ficcare clips/clamps at high end department stores, and online.
http://www.ficcare.com/ficcarecatalog.asp
You can find fakes of these at places online (www.hairboutique.com), some Trade Secrets (I believe they call them Concorde Clips there), and Claire's has some smaller sizes. I like the metal ones, which are most like Ficcare's. They are usually much more smooth, and don't have teeth to catch and pull on your hair. The plastic versions are too light for most of my hair styles, but some can be made to work if you find one with a good spring, and file off any rough edges.
Hope this is helpful!

-Fox
17/32.75/35+ - Bangs at 15 inches - Type 2CMii (3B underneath layer) Somewhat fine, slightly wavy (with curls on the underneath layer), light brown with gold and red highlights. To see more pictures, click on the gallery link found here:
Just Fox...
You can also find me here:
The Long Hair Loom
"Watch your thoughts, for they become words. Choose your words, for they become actions. Understand your actions, for they become habits. Study your habits, they will become your character. Develop your character for it becomes your destiny." -John MacArthur
Products Used:
Aubrey Organics S&C
Vinegar/herbal rinses
Oils: Jojoba, Sweet Almond, Virgin Oil de Coco Creme, Monoi, Castor, Meadowfoam Seed & essential oils
Shea Butter (from which I make my own leave-in)
MP Popular Mix Brush
Wood and Horn combs
Vitamins/Minerals/Herbal supplements