Hello all, looking for a little help & guidance.

I am looking to cleanse & charge a new ring as a talisman. It is a silver ring (92.5) with a big Lapis Lazuli stone & engraved with JohnnyScience. I did not make the ring myself, but had a jeweler make it for me. I realize if you can make it yourself it is a much stronger talisman, but I'm not a jeweler. I haven't "worn" the ring yet, but have tried it on for fit & looks.

I was reading around the internets & found this cleansing ritual:
http://www.enchantedworks.com/db/view_article.php?story_id=20050516144925

I am hoping to perform this on the full moon of the 29th of this month with all of the materials listed within that ritual.

The only thing I'm confused about is the South being fire, I've read some where that North is Fire? Which one is correct? The rest seems to be correct right? East is Air, West is Water & Earth is whichever one isn't Fire.

What do you guys think of that one? Do you have anything to edit or add?

Would adding my blood to the ritual at some point be even better?