I have tailwhips, barspins, downsides, footjams, footjam tailwhips, and 360's. All I need are bartwist, 180 tailwhips, 180 bars, and a decade! Please help on 180 tailwhips! ASAP
Landing in fakie is probably whats getting you stuck up. It's probably playing on your mind or something, so try it on a bank or maybe even a miniramp.
360 whips are easier than 180 whips in my opinion.
I also believe that 180 whips are harder to do on flat than off a ledge because off a ledge you have much more time to do the motion, as compared to having to rush the trick on flat.