Find a willing friend and ask them to sit, or stand in front of a white background. Set up soft lighting. Both of you need to be relaxed for this exercise, so try to make your breathing deeper and deeper.
Stare at the third eye or forehead. Allow your physical eyes to lose focus, instead relax into your intuition until you begin to “see”. At first there may be only a dim haze, but stay in that relaxed state and it should brighten and you may pick out some colours.
Using your left hand, reach out to where the energy layer extends to. You should feel the energy against your hand, almost pushing on you.
Practice this until it becomes more natural. Eventually the aura should appear more quickly and the colours will become more noticeable.