I think this is good tutorial for students new to headstand-although I find Kino saying move the pelvis forward slightly confusing, as I would describe this as moving the pelvis backward- but all amounts to the same direction I guess.
I have never heard the tip about taking the calf flesh out before-nor the mention of lifting the thighs-Kino always give useful information in her short clips. It took me a long time to get the hand/foot grip correct and my feet most definitely do not touch the floor ;-)
I tried this pose for the first time earlier this summer. I managed to bring my knees down, assisted by my teacher, but getting them back up was a different story. I think this is a useful tip that Kino gives about practising from headstand first and moving the leg back to come into lotus makes sense. Now to practice and possibly fall on my head :-)