Feel them
Feel the person feel them out got a person can fake externally, but your feelings will reveal the truth.
It is possible to feel if someone is judgemental, kind, evil, angry, happy etc.
If you start to feel angry when you are with a person, that person is angry.
As everything is one, you can see them by the effect they’re having on yourself your feelings, your thoughts, your spirit etc.
Observe
This is not just seeing, it is observing looking. By practicing this skill a person’s observation gets better and better and they see more and hear more and more.
Consciousness
Everything is one, the whole universe is one. So by putting your consciousness on another person, you can experience them, the physicality, psychology, spirit and connection with the Divine.
You can do this and experience, as much as you can your own self. This is just by focusing your consciousness on them.
Experience
The more you experience different kinds of people, then the next time that facet presents itself in another person, you will recognise, be able to see and understand it from before.
Be interested in others
Most people are not aware of others because they are not interested in others. They are so obsessed and involved in the ego of I and mine.
To be aware of others have to be interested in others, not just I, me and mine.