Buffing paint, also known as colour sanding can look a little difficult, but luckily it's not as hard as it looks. To avoid burning through the paint don't buff in the same spot for too long on edges or any other surfaces that are not flat. Keep a circular motion going and spray a light mist of water to keep the panel cool and to help spread the buff past evenly.
how to page, don't worry if you've sprayed your clear coats or 2k colour coats and you've got little runs or ruff spots, or even if your project is all covered in little bits of dust. By sanding and buffing your paint work the correct way, most types of spray jobs can end up looking great. However if you have a serious run the whole way across the panel you may want to repaint instead.
When it comes to buffing out scratches the first thing you are going to need to know is, can my scratch be buffed, or does it need to be repaired and painted? Run your finger nail over the scratch, if it doesn't dig into the scratch that means it's a surface scratch and it can be buffed out; Although you may still have to give it a wet sand with p2000 grit sandpaper and then start buffing.
Black cars and darker colours will end up with swirl marks after you have buffed it and thats totally normal. Use a swirl removal cream and a polishing/finishing pad to remove them. Lighter coloured cars are very easy to buff.