I notice that no-one who has written up about the kickflip actually knows how to do it, maybe because none of you skate, but here's how its done anyway:
Firstly, you should already have a confident ollie from most feet positions, next you need to experiment with your personal preference as to where and what angle you place your feet at, this takes some time and you should practice as much as possible, even when you think you've got kickflips perfect, you don't. No one can do a kickflip every time and anyone who says they can is lying, even pro's need a few tries sometimes. Anyway the following is my technique which you might find useful.
Place the front foot with the leading toe just covering the nearest bolt at about 45 degrees to it. Pop down the tail and jump at the same time (basically ollieing with your foot in the wrong position) and when in the air push your front foot up the board and off the nose, not off the side as many people think it is done. Keep your eyes on the board and when it has flipped, put your back foot on to catch it closely followed with the front foot to level out the board. There's how to kickflip, I hope it helps someone.