First attempt at real bodywork. Tips?

You got that right. His first response when we found the rust, well it's been like that this long. I said yeah but we didn't know about it. And now that we do, we gotta fix it. I can let some things ride, but a rusty a pillar is unsafe. If it's mine, that's on me. My kid? No way. Car is down until this is fixed. He gets it.
You are absolutely right to black flag him until the car is inspected and safe as it can be.

You remind me of when my adoptive dad black flagged my dart off the road because of a corroded brake line when I was kid starting out with cars. Got it fixed and back on the road safely.