Maybe this thread should be moved to the under-thread "Covers" ? How do i move it?
You've got the basics there, which is good. Maybe a bit more power in your voice will serve you well, but remember that its all emotion, and that the guitar and words should dictate how much power you should sing with, if you should sing with grit in your voice, if it should be whispered, clean, falsetto, or screamed. There's not much more to it than that.