Al,
I have tons of lyrics but I fond myself farting around wit hthe guitar and chord progressions, once i have a few chords together that sounds like it can be good for a verse I start making up lyrics to go along wit hthe chords.
Now, what do you sing about? anything!! think of a subject that you know a lot about or a little and write down your thoughts or sing them along to the chords.
Sometimes they do not work but write them down anyway, you might be able to rearrange them later in the song for another verse or bridge or chorus.
I normally do
Verse Verse, chorus, verse, chorus
break , verse ,chorus
or
Verse choris, verse chorus break chorus verse chous
anything you are happy with is fine. If it is a really catchy chorus then use it more. If it is long and not so catchy, dont sing it between every verse.
Thats what i try and do anyway
ken
ye get some that are cut out for the job and others just get by from pretending