How to Fix a Bad Mud Job with Mud over Paint is one of the steps in the doityourself.com article.

If you're wondering if you can use drywall mud over the paint to smooth out the walls, it's due to over-scraping to remove old paint.The answer?As long as you follow the instructions.You can get started with the guide.

To remove dirt, grease, or other debris, first wash the walls with trisodiumphosphate.The surface of the wall can be improved by cleaning it with a strong product.

If not handled correctly, trisodiumphosphate is dangerous.Follow the safety instructions on the product.Wearing gloves, safety goggles, and long sleeves will protect your skin.

Remove any loose drywall with a paint scraper.Dust off any loose pieces from the wall with a clean rag or paintbrush.

Use the mud and blade to fill in the low areas that were damaged by paint removal.Let the mud dry completely.