Hi Powderman,
Nice song. I really enjoyed hearing it. You've assembled it really, really well. For what it's worth, I have only one suggestion - a prosody one. For the last line of the chorus, instead of saying, "Lord please make it rain" in even quarter notes, I'd try,
Lord
(beat 1, half-note), please
(beat 3) make
(beat 4) it
(beat 4½) rain
(beat 1, next bar). This placement also follows the pattern of the hook (Lord make it rain) and simply adds an extra note on beat 4½.
To my hearing this places a little more musical emphasis on "please" and this sounds more like a plea to heaven to me. This is just a thought, though, and you've probably tried it already and decided against it

Overall, though, this song was well worth the listen.
Regards,
Noel