first learn hand drag 180.
Hand drag 3 is just like 180, but thrown into a corked spin more, shifty it out a little and drag that hand on the snow to pull you around.
540 is the same as three, throw a little harder, lay that hand out, and pull it towards to across the snow to pull yourself into a harder spin.
None of that 2 handed BS. looks like you are trying to grab onto the ground as you are falling out of control. (that's my opinion though).