Anything you do to the back of your hair takes precision and care. It takes a great deal of skill to give someone a tapered fade haircut, so it will take mastery to give one to yourself. The tapered fade is like the icing on the cake with many hair styles. The DC fade, which is a tapered haircut faded on the sides of the hair and back, would not be complete without tapering it.
Find a mirror that you can hold that is not too heavy because you may have to hold it for a while. Get in a comfortable position where you have clear sight of the back of your head. Get someone to hold the mirror for you if you cannot find a comfortable position.
Comb your hair out thoroughly to ensure that it is even. Place the largest guards on your clippers or use the guard that cuts the amount of hair off that you desire. Get a nice grip on the clippers.
Run the clippers from the nape of the neck up to about 1 inch from the bottom of the hair. Do this all the way across the neck, making sure to even out the taper.
Apply the next smallest guard to the clippers. Using the same procedure, go up to about 3/4 inch from the nape of the neck.
Attach the next smallest guards to the clippers. Go up about 1/2 inch from the nape of the neck. Be careful not to cut too far up. You should begin to notice a fade appearing. Trim your hairline in the back to give your taper a better look.