The fakie kickflip is just a regular kickflip, in the fakie motion, so you’re in your regular position, just going backwards. To start this trick, you would probably want to be comfortable doing high fakie ollies, and be set to land a trick and stay riding backwards. You may want to put your front foot up a little higher to the nose (preferably right behind the front bolts at a 45 degree angle) because the board is easier to flip when in the fakie position. The rest is the same as the kickflip, so theirs not too much more to it.