Do you know any local guitarists that you might jam with? That is the only way I have ever worked out the particulars of an arrangement. Making noise is a great way to mine music for the expressive ore you seek. Alot of it will be trash but that is still a good place to explore the limits of your composition. Mistake are where many classic songs got their hooks.
Where does your producer/ guitar player live?
Captcha is a total pain in the........