I think there are natural instincts, which will lead you to "perfect" your performance with practice and frequency. The internet these days is a perfect tool to observe various stuff in action.... Watch, listen and learn.
And pay attention to your own body. It will let you know what is working and what isnt.
They are all cute, adorable, hot, but it does more to perpetuate the shallow stereotype that ALL you need to succeed is a good body. They really made it about physical appearance and NOT the sport...
But I aint complainin, just observin.....