Just bear in mind that you should be comfortable with the nail art you choose for Halloween. Make sure that the nail art does not chip easily and will not damage your costume in any way. It would be bad if either one of your nails or your costume will get damaged when you are out there trick or treating.
Black and white themed Halloween nail art technique. Play around with smoky tree silhouettes, black skeleton faces, bats and stripes on your nails. You can also use black matte polish for variety on your nails.