I use Poser Pro 14 Dev. I also use render que so I can close posers scene, and start animating the next scene while my rendering is done in the background. That saves me a lot of time over all using images. That is why I was hoping that Premiere would make the process just that much faster. Your Twerking scene is fine, but you need to either  tack your feet down so they don't slide. inverse Kinematics should help, but sometimes that makes the legs twist. What I do in that case sometimes is after you do the animation, undo Inverse Kinematics to any leg, but before you do that Mark where the foot is placed, mark it with a primative where the foot is placed and each bad movement. Correct it but make sure the foot goes into the same spot. Sometimes it takes time to correct that. But if the feet are a must to show that will have to be corrected. another way around that is to don't show the feet by cropping the body above the feet. Hey no body said it would be easy. Good Luck