watercolor seamless pattern of halloween theme with cartoon witch, spider, pot of potion, pumpkin, broom and cute black cat, hand

halloween witch orange spider pumpkin pot cat seamless border trick mystery watercolor banner hand drawing bat gradient invite monster spooky ghost horror scary skull poster party violet creepy night october fun treat happy space cute cloud holiday celebration decoration background autumn purple colorful season traditional jack sketch hat broom pattern theme cartoon potion black drawn greeting card