Vampire fangs from fake nails tutorial. You'll need fake nails, a nail file, and poligrip.
Simple vampire makeup http://www.makeupbee.com/look.php?look_id=64018
DIY Halloween Vampire Fangs- Made from fake nails glue to teeth with dental putty.
scary female halloween costumes - Google Search
I always get girls that want to be vamps. Love this.