Her butt, I loooooove butts.
I'm a gentleman, I wouldn't look ! Ha!
Her face ... Seriously ... If we're talking physical attraction only, she has to have a nice face.
It depends on if I have a significant other or not. If I'm single, I would look at her face; I'd like to know what the woman looks like. If I'm taken, I would close my eyes and hope the woman I'm with doesn't find me.
If you're still waiting on the eyes to receive communication, you've missed the most obvious message---fortunately she is going to continue sending until she gets it through your thick skull.
I think I would follow her hands since I suspect they will be indicating to me what she prefers me to be looking at during her peerformance.
Well, her face of course . . . The eyes communicate the most.