Before I began this sketch, I thought of the round-headed characters that are so prevalent in the work of Paul Klee (i.e., Error on the Green, Senecio, Pierrot Lunaire).
I drew the head with fine lines of a watery liquid frisket; I created a circular patch with a thicker frisket, that I envisioned to be the sun or the moon.
Without a grounding, the two circular images were floating on the paper. I drew blue wavy lines below the head. With this, the image stabilized.