@pumeco - Actually that is one person, you can see a reference drawing here:

http://idahorhythm.com/xtra/balletsteps.html

@eClark - The new image does look much better! It still make me instinctively go ouch, but it is more believable. Sorry for the niggles - but you did ask :)

What follows here is not to niggle you more, but I wondered why I was still getting an immediate ouch response. So, this is what I came up with.

I think my instnctive feeling also comes from the leg/foot position relative to the body, which is well forward of her center of mass. To be able to lift/unweight her rear foot from that position, she would need to have a significant amount of forward momentum with her center of mass. With the right heal being so close to the floor, with her right leg straight, all of the force of the forward movement would put a great deal of force on her ankle (plus now the knee appears to be turned a bit too far, which would also put significant lateral preasure on the knee). If the right leg/foot were moved slightly back, closer to vertical alignment with the body (similar to the orientation of the reference photo), it probably wouldn't make me instinctively go ouch. But it's hard to say for sure.

At this point, do you really need to worry about this for a product promo render? Probably not, because from some of the other responses here, it's highly likely that it won't "bother" over 90% of the people who see it. I was just "thinking out loud" to figure out why it still bugged me.

Honestly, I think you did a great job here. Your improvement in render quality and presentation from the first images is really impressive. Sorry for all the niggles, just my inner A personality getting carried away.

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