What Pranay does is just a simple J-Whip where the Loop of String goes over his arm..
Yeah & this vid is just the same simple J-Whip over the near cup rather than the far cup. Try J-Whiping the near cup in normal mode then just do it over your arm. True its a tricky whip at first but it ain't that hard.
Edit - sorry crackers if I seem to be having a go at your trick, its just something I've seen and done for a long time (thought you do it much smoother than me already
) Your (solid looking) vertax bounce trick though - pure magic - much respect.