Halloween chalkboard art that draws itself in chalk

A round owl perched on a thin crescent moon with two bats and a few stars around it. Simple bold illustration with thick clean outlines and flat colors (cream, orange, mustard, soft violet), large shapes and little fine detail so it reads well as chalk lines. Plain white background. Avoid text, letters, logos and watermarks.

A crooked two-story haunted house on a small hill with a bare tree, a picket fence, a big full moon and three bats. Simple bold illustration with thick clean outlines and flat colors (plum, orange, gray), large shapes and little fine detail so it reads well as chalk lines. Plain white background. Avoid text, letters, logos and watermarks.

A black cauldron with green bubbles rising, a wooden spoon, and three potion bottles of different shapes beside it. Simple bold illustration with thick clean outlines and flat colors (green, orange, purple), big shapes, little fine detail so it reads well as chalk lines. Plain white background. Avoid text, labels, letters, logos and watermarks.