Another fun Halloween manicure involves literally putting your fingerprints onto your nails. Paint a white base coat, paint red polish directly onto your finger, dab onto some paper to get the excess polish off, and transfer the polish from your finger onto the white nail polish. Seal with a topcoat and you have a crime scene on your hands. If you want to step it up a level, add blood splatter effects over the top of the fingerprints like this artist did.