I think the frog stand is covered in F2, but I have started just playing with it on top of my F1 work. I am thinking of the basic frog stand (also known as crow pose) with bent arms.
I have noticed that there are two possible ways of doing this:
1) knees above the elbows, but slightly outside, like in this picture

Or knee on the triceps, not outside, like in this picture

(the second seems more advanced with more compression, but I am only wondering about the knee position).
Which one is preferable to practice, has more transfers to advanced variations, etc?
Thanks!