Yes, you made a psiball. Beginners will feel random sensations, including tingling, a push/pull feeling, heat/coolness, etc. Once you get used to making them, you can program them to feel a specific way.
Other than Psipog, I don't know of any real pictures.
They were trying to compress as much energy into their psiballs as they could. With a certain amount of energy and programming, a psiball will become visible to the naked eye. My guess is they just recorded their psiball making, then cut out the best frame and posted it on Psipog.
If you have any more questions, feel free to ask.