IT TAKES SOME TIME!!!
Here is what I do to repair rock chips, and I get a lot of them on my Viper when running at the local road course track days.
1) clean the chip and a small surrounding area with alcohol to remove any
wax.
2) fill the chip with your touch up paint; this may take more than one application to "overfill" the chip, let dry - usually overnight. Since we are talking about a very small (minute) amount of paint to fill the chips, I like to use a tooth pick (even sliced to a shark point), or even the point of a straight pin . Dip into the paint and get a small blob in the tip and fill the chip. Metallic paint is the hardest to fill because of the pick up of the metallic in the paint.
3) now go to your wife's favorite beauty supply store and buy some emory
boards - you know those cardboard finger nail files. Get these in various
degrees of coarseness, from fine to finer.
4) use these "files" to file off the excess paint and work down to be
even with the surface. It works best to cut the "files" to a small
point or rounded point (say 1/8 inch wide) so as to file as small a
surrounding area as possible.
5) you will have a few marks in the paint, like swirl marks.
6) I use a buffer to remove these marks with a very fine cutting compound
or swirl remover; clear coat safe.
GOOD LUCK.