your setting to early, if you stop the vid a 00:02 and you look at your head, where are you looking??? at your landing. when you get off the take off look at the back of the jump, not the ground.
i think you need a bigger jump. but yea you are almost there just keep tucked till you get that rotation around. once you get them down you can start dippin your shoulder a little more too and get them lookin really smooth!