Well this afternoon I tackled the bad key mark down the passenger side, from front wing through to rear door, I ordered some touch up paint off ebay and suprise suprise the shades miles out, but when the scratch is white anything darker going to look better . Well this is what I started with.
Well started off filling the scratch with paint, I used a very fine brush but it always looks crap when it goes on, I built it up with two layers.
Now the leap of faith when you dont have anything to measure paint thickness, and dont know the history of the car, you take 1200 wet and dry abrasive paper and rub it down using wet soapy water.
I then repeated this again using 2000 grit wet and dry again with soapy water.
I then used G3 cutting compound with the polisher and gave the wing, front door and rear door a going over, then to protect the cut paint I applied a coat of Harly's Wax to protect.
Here is what I have you can still see the scratches as the colour wasnt a good match but it looks a lot better, and to the naked eye you arnt drawn towards them now, the camara as always picks them out well.
This is my car and I wouldn't suggest you attack your cars with paint or sandpaper.