If you want to write a typical metal song, mention blood and demons and stuff like that a lot.

I would be more interested to hear a metal song with lyrics that were kind of....about something. I don't really dislike the music aspect of metal, but the lyrics are just so...dumb. In fact, the only metal band I can stand for extended periods of time is Rammstein, and I think a large part of that has to do with the fact I have no idea what they're singing about, as they are German.

No offense meant to metal people, that's just my opinion on the matter. There are more than a few metalheads around on here who I'm sure would be willing to show you the ropes.