In meditation one has an opportunity to enter into altered states of consciousness. In creating, my hand expressed the vast realms of space that my awareness might enter during in a trance or altered state.
Often in my spiritual practices, I explore the spaces of darkness including shadows parts of my personality. The light is always doing a subtle dance with the dark, one just needs to slow down enough to become aware of it. Consciousness flows from one state to another, if we pay attention we might catch a glimpse and embrace an deeper understanding of ourselves in the process.