This blog has by far the BEST selection of Halloween label art I have seen yet!
Creepy Halloween Labels Halloween Bottle Labels - LoveItSoMuch.com
Potion bottle labels
Free Halloween Potion Labels | Picture 8 of 9 from Potion Label Project
Halloween label for invite, card, tag... Love the crackled finish
i have ideas for ALL of these labels!!! More
Creepy Halloween - Free Printables - Hello My Sweet