These things are real. They are actually present. It's just that you didn't know how to see them before. The sparks just seem to go about their purpose. The filmy foggy ropey sheet-like ones, I haven't been able to figure out yet, except that they seem to have some sort of intention which accompanies their movements.
Many people also see whirling vortexes of sparks.
If you find your attention drawn to some particular point, it's OK to look there. It is usually because one of these lights wants to communicate with you, and has brought your attention to it. After some practice, your mind will become accustomed to this, and will begin to convert these pictures and feelings into words, or words will begin to accompany the pictures and feelings because the mind has worked out a way of interpreting the images and feeling into words. And you can talk to them in the same way they are talking to you. With feelings and pictures, and over time with words, as the brain adapts to this process.