This design is definitely a messy one, but the most fun. Paint a white base coat. Then, get a plastic straw and cut in half; put some red nail polish on a paint palette, magazine cover, or jar lid (again, creativity with the tools); cover the tip of one straw end with the polish; aim towards the nail; and blow into the straw. There you have it, messy blood splatter effect. Just don't suck nail polish up the straw, whatever you do!