Credit to Psiwiki for this awesome article
What is flaring?Edit
Flaring is a unique ability to make your psi and ki balls visible to you and others. This is helpful to see the length and how big the area of the energy ball is. Understand that flaring an energy ball can take a while, so don't think it'll happen within a few mintues. Keep trying, and don't give up.
option 1, Make a psi ball, preferably in a dark room and make it extremely dense, then make multiple shells Added by Poltergeist101inside, about 5, and visiaulize each one spinning very fast, the closer to the core the faster, and keep one making it faster,and visualising it exploding with the color of your choice, and eventually it should light up because of all the energy built up.
option 2, Make a psi ball, preferably in a dark room and make it extremely dense, then see (visualize) it lighting up with the color of your choice and keep adding energy until it lights up.
For beginners you might notice a slight mist in the first times.
If you want your psi ball to stay flared, keep adding energy.
Credit for Nexusdad for these techniques