I usually look at the eyes and that works well for me. I can see the POV of people who look at the upper body though.
I guess the important thing is to not get fixated on what you are using as a reference point, and allow your peripheral vision to do a lot of your 'looking' for you.
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Behold, I see my father and mother.
I see all my dead relatives seated.
I see my master seated in Paradise and Paradise is beautiful and green; with him are men and boy servants.
He calls me. Take me to him.