watercolor halloween featuring witches a haunted house bats and a pumpkin all set against a vibrant and spooky

halloween watercolor witches haunted house spooky night bats pumpkin scary magic fantasy festive october celebration season trick treat costume party ghosts witch hat wand silhouette flying face windows trees whimsical creepy dark mysterious enchanting magical shadow holiday decor background autumn fall art digital graphic design artwork featuring set vibrant backdrop generative