Hello Jan,
Your words put me to shame. I am convinced that the man with the screwdriver and the spray paint can do wonderful restorations as well. Anyone who deals with the subject as intensively as you are certainly able to do appropriate work. We both know that there are many attempts with errors before success. If it is successful, that has little to do with magic. Rather, it is the experience in dealing with the materials that brings us success over time.
Cheers
Jürgen