How do I go about creating Symbol Arts?

I've seen a lot of people using custom Symbol Arts around lobbies and I was wondering how they created those and set them up? It's one thing I was having issues figuring out

Use the symbol art editor: http://www.pso-world.com/forums/showthread.php?215777-Symbol-Art-Editor-EN-Version

If you don't want to use a third-party tool, you have to do it all manually in-game.