Step 1:

Brush any colored hair so there is no tats

Step 2:

Brush only the ends of the rest of your hair.

Step 3:

Pull all of your hair into a doughnut ring.

Step 4:

Spread your hair around it and secure with a band.

Step 5:

Tie a Ribbon around your hair for decoration. (If you want, before this step you could wrap the remains of your hair around the bun and secure with a band.)

Step 6:

All that's left to do is pull the hair from the bun to make it loose.