Dewey,

A good write. Appropriate backing. Well sung.
Very well done.

If there is a "market" for this type song (if a cut is the end-game) it gets smaller all the time. The 70's and 80's saw a lot them. The 90's still served them up on occasion. They don't show up much these days. That makes this a tough (limited) pitch.
"Thick-skinned songwriter who keeps trying to get better at my craft."
I, of course, admire the sentiment in this statement (all of it). And there is a good amount of "craft" displayed in the writing. If "clever" is the goal, I'm not sure you could "improve" there.
My suggestion (and this is VERY subjective) is to work at writing that evokes an emotion from the listener (not just a chuckle).

Still....solid.

fj