Draw a large circle (around 28 inches in diameter) on your cardboard. Then cut it out carefully with a craft knife.
Lightly outline a witch flying on a broomstick across the moon. You can reference vintage Halloween art or freehand your own.
Use yellow and a touch of brown for a glowing moon effect. You can blend the edges in circular motions for a natural look.
Paint the witch’s silhouette in black. Highlight small areas with brown or gray for subtle dimension, like folds in her cloak or hair strands.
Once dry, add highlights or small touches like a bat or broom bristles using fine brushes.
Spray a coat of clear sealer for protection. Attach the wire at the back for easy hanging on walls or doors.