In my experience you need a dark matte background for best results. Hands are held out with pointer fingers extended in front of you, with the background in front of them.
You keep one hand motionless, move the other, there is something that might look like a strange illusion, it is subtle at first. It is as if there is a change in the light that connects the two fingers, like an almost invisible line, and it moves when you move your hand. It is not like light, it is like the light shifts or warps in the field of it.
At first it is subtle, but if you learn to see it you will start seeing it all over and it has something like a color.
If you put your intent in your fingertips, your attention to the sensation of them as you do this, you can intensify the effect.
You can use this to touch things by changing your intent. My favorite demonstration is petting animals without touching them... they aren't physically moved, but they do certainly respond.
You can work with this field in a lot of ways, sex is an interesting one. Not everyone is as sensitive to it, alcoholics are really weak in regards to seeing and feeling it, i have no idea why. I mean alcoholics who drink all the time, those in recovery can see and feel it. Some people are super sensitive to it.
It sounds like bullshit, but I think of it as ordinary, certainly not supernatural to me.
Maybe I am wrong though and it is not the aura, maybe it is something else. I have no idea what. It reminds me of a transparent field of fire with a very subtle blue/purple tone.