Your skill in your Jackknife will directly translate over to how good your Crowd Awakener Knife is going to be. There are usually two different Jackknives: Those that have a very defined Roundkick, where it almost looks like there is a pause between both kicks and those where the Roundkick is swung over fast with no visual pause. The first one is more useful to learn this variation, because the splitkick will feel like a midair pause.