Martha's advice is spot-on, but I would add that you've got a reference with tricky fabric that is so light (silk chiffon) that it catches air very differently than other, denser fabrics, and acts like it has a delayed response to gravity. If this was a silk jersey (much slinkier) or velvet (heavier, apt to catch on itself), it would create different shapes when tossed up like that and probably not kick out behind without one of the dancer's legs supporting it. This is one of those things where it just takes reference + practice.