Originally posted by dcl:
low quality of the factory paint doesn't help.
You should check out Chrysler, Jeep, Dodge quality paint, if you think Ford is low quality.
But back to the touch-up, try to get a very fine paint brush. Take the paint and put some into a dixie cup. Then take the very fine brush and barely dip it into the paint. Thin it out a bit by running it along the side of the cup. After just apply to the car, until smooth.