So, first off, your 'coon tail will be two different colors. Make sure they look good together, use your basic knowledge of color to do all that fancy stuff. Next you’re going to need rather thick dye, because if dye is dripping down your hair… well, it’s not going to work. This is why bleach works better for 'coon tails. It’s thick, and doesn’t drip. If you’re paranoid that you still wont be able to keep dye from dripping you’re going to need conditioner.
For this you will need a small brush, I used a root touch up brush, and of course, you’ll need your bleach/dye. Grab the strand of hair you intend on bleaching, take your brush dip it in the bleach and apply a thick coating on your hair in a horizontal line MAKE SURE WHEN YOU HAIR IS FLAT DOWN IT IS STILL PERFECTLY HORIZONTAL, or otherwise your raccoon tail will be “lop sided”.
Skip down the same width of hair that you bleached, leave this piece alone, now apply the same amount of bleach on the next part (I suggest using your finger for measurement) and basically do the same dance all the way to the end of your hair. Make sure you get the bleach or dye on every strand of hair or when wind blows or you move your head at all it wont be right.
NOTE: If you’re paranoid about getting bleach or dye on the hair not meant to be dyed, apply conditioner to that part of you hair all the way through, this will help.
NOTE: I have come to discover that dark colors and black sometimes don’t show up well together so think about your color choices. Good luck hope this helps some. :]