A mandala is a circular pattern that in spiritual usage—principally in Hinduism and Buddhism—represents the universe. More secularly (but still with a soupçon of spirituality), the pattern of a mandala is circular and symmetrical, with repeating access points into the center of the construct. This geometric pattern can be held up as a metaphoric representation or the cosmos, or as a symbolic version of the macrocosm or universe at large.
Often I do not recognize the pattern of my own work until after a body of work has been well under way. It seems that over a few years I have been creating mandalas on the light box using flower petals, followed by an LAB L-channel inversion adjustment of the white background of the image to black.
Here are three of the many mandalas I have created using this set of techniques in the past few years!