I'm not sure if your still in need of a tutorial or if you already found one but if you want a tutorial on fangs for your entire mouth like the Halloween ones then maybe follow this tutorial https://www.youtube.com/watch?v=WoOezu6L938 but if you want just a couple individual fangs i would suggest this video https://www.youtube.com/watch?v=D1HdqsZ9cGw again not sure if your still looking for a tutorial but i hope this helps somebody.