The most authentic way to get elf makeup is by making it yourself! You can use natural ingredients like crushed berries or herbs to make red and green pigments, and use a small brush to apply them. For the ears and nose, you can use eyeliner and lipstick to create the pointy elf look. If you want a more professional look, you can also find elf makeup kits online or in specialty shops. These kits usually include everything you need to create a perfect elf look!