It is painted on gesso panel with acrylic paint and posca. As for the subject matter, I chose it because I thought it should be somewhat powerful. The design was inspired on the spot. The color combination of the background and sides is also quite nice. If I had a concept, it would be that the work should not be too abstract, but rather simple in design and composition, and that it should have an impact, or presence, or something like that when displayed.