I've seen this many times before: painting panel lines with black paint.

But I look at my own car...and nobody painted the edges of my doors or inside the cracks with black paint.

If it was me, I would mix a diluted water based paint.

Use the same colour as the car, with some black added to darken and dirty it.

Then brush it on and wipe it off.

Do it again, if you want it darker.

if you are painting over gloss or well cured paint, it should wipe right off. Do it quick.

Whatever is left behind in the panel line can dry to be a shadow in the panel gap.

Not your fault for trying something thats been done before.

And not your fault that it doesn't look good.

But it just ain't right is it?

I like the silver details on the bonnet. Nice.

Makes me want one of these cars again!

I loved these when I was in high school.