Well according to the rule of thirds, Yoko should be less predominant in the picture as opposed to the rest of the room. Past that, a cross hair appears between her eyes, so you should probably key into that along with the red hair first. After that you've got a form contrasting to the background that you should follow down from the head to the chest to the legs. Apart from that, it's logical that one would look at her eyes first considering that this is how we're conditioned to speak to people, and that people are naturally drawn to eyes. And, interestingly enough, I seem to notice her left tit before the right one, most likely because of said rule.