I have a scratch on my red civics car door, about 20cm's long. When I spray water on it, maybe about 5 cm vanishes and the rest stays. Its probably only around 1 or 2mm wide. I watched some video's about removing it myself than paying a bodyshop to do it.

I will say I have no experience in this so please tell me if this is a bad idea, but these were the steps I was going to take.

1. Clear the area, soapy water and some rubbing alcohol.
2. Smooth out the scratch, dry sand 1000/1500 grit to smooth out the edges.
3. Tape either side of the scratch leave a small gap either side and paint.
4. Once you've built up layers, peel the tape off
5. Thin dry sand with 800grit the built up paint so its level (or wet sand?)
6. 2x thin layers of clear coat, let dry and then wet sand 800grit and working up 1500/2000 etc until smooth.
7. Then wet sand even higher grit 3000/5000 and polish

Have I missed anything? Or any tips?