In the video I'm practicing Bharadwajasana ashtanga style, here in Vinyasa Krama we look over the shoulder on the same side as the folded back leg.
The unbound hand rests on your hip rather than placed under the knee....firmly if you need the extra support for the twist.
Try to keep the shoulders level, there's a tendency to dip the side your twisting in to.
Twist a little further whith each exhalation
NB: These are practice notes that will be tidied up and put into the new edition of my Vinyasa Yoga Practice Book along with the current sequences and subroutines. The book can be freely downloadedHERE. There is a page on Facebook HERE with all the latest sheets and updates. This book is in no way a substitute for Ramaswami's Complete Book of Vinyasa Yoga.