I had an E30 M3 several years ago. Original paint nearly perfect car. But it had 3 very minor door dings. 2 of them were removed perfectly. The third was on a crease line in the door. Should have left it alone, but the PDR guy said he could do it. Wound up with 2 smaller dings and a very small crack in the paint

Never try PDR on a crease or fold line in the body!