A white wolf with yellow eyes and a full moon in the background

The large circular shape of the full moon would take up most of the frame. Within the lighter gray areas of the moon's surface, there are subtle patterns that the imagination can interpret as forming the silhouette of a wolf's head/face. The outline would have rounded edges like the craters, but the placement and curves could suggest the shape of an animal head facing forward or to the side. Darker grey patches in the texture represent the eye sockets, nose and muzzle area. Lighter shades connect to form the overall profile view of the head/face from the side. No solid black shapes or sharp contrasts - just subtle tonal variations that allow the viewer's mind to perceive an illusory image amongst the moon's natural topography. Soft hues of pale grey and blue could be used to depict the mystical or imagined quality, without making the wolf's face appear like a literal drawing or photograph superimposed on the moon.

EasyNegative,