Your approach is the opposite of the way we approach it.

You say you have written 270 songs, but I think you are just writing lyrics? And good ones too, that is not intended as a put-down so please don't misunderstand.

But for me lyrics without music is a poem, not a song.

In our case most of the time I come up with the music first and send it off to my friend, who writes the lyrics and sings. So, I'll send her off a basic music bed that will have verses, chorus, maybe a bridge. As she listens to the music she develops the melody, and then writes the lyrics. The music may change as she is going through her creative process, she may want me to change the song structure, add a verse, bridge, etc.

Which shows there is more than one way to get the job done I guess.