When i do plastic whip and i jerk the yoyo up and try to whip the string to form the loop the yoyo is supposed to go on, nothing happens. ??? ???
Practice… 
Watch the video a couple times and make sure you understand what exactly is going on. Once you have that its all in the practice. You’ll just land it a few times and say “Whoa, no way!” then you will get better and better at landing it consecutively.
make sure the string hits the yoyo
YYYYYYYEEEEEEEESSSSSSSS I can do it!!!