Making metal version of pop song?
 

I think this is where I should post this. Basically I am wanting to make metal versions of pop songs. I was wondering if I should play all the notes an octave lower from the original song? I really want to try this but I don't really know where to start. I have the tabs/score for the songs I want to do this to. Any help would be appreciated. If you want examples of what I am trying to achieve, search Eddie Kim on YouTube.
Thanks

Be... creative...?

It's not like there's that much of a formula for these things.