[header] How to tail whip [title] Practice your jumps and airing out. [step] To do a bmx tail-whip, you'll need some serious air. It's hard (though not impossible) to tail-whip from the ground, so practice on a quarter-pipe or other jump that you can get up off the ground high enough to whip the bike around safely and have a chance of landing it. 
Practice getting big air and turning around clockwise to aim forward as you land. [substeps] One good exercise when you're trying to learn is to kick off your far leg.