It looks legit and realistic, plus, it fits the theme so well.

Check this video tutorial out byMake Life Lovelyon YouTube to learn how.

If the cauldron you bought is not black, then spray paint it black, and let dry completely.

Easy DIY Fake Fire & Witch Cauldron For Halloween

Image credit: Make Life Lovely via YouTube

Once the paint has dried, lightly spray them with white for a charred look.

Easy DIY Fake Fire & Witch Cauldron For Halloween

Easy DIY Halloween Décor

How To Make A Witch Cauldron With Fake Fire