having sold cars, I did my fair share of touch-ups.... here's what I did to make it work and almost untraceable....
buy touch-up paint
don't ever EVER use the brush that comes with it....
the secret is to go very thin, in layers, to fill up the chip...
depending on the size of the chip, I may thin the paint.... careful... different manufacturers use different based thinners...
put a drop on old plate or something and add a small drop of thinner... mix and fill with a SMALL THIN ARTISTS BRUSH.... just enough to lay a thin layer in the chip. Let dry or dry with hair dryer... about half an hour later, do it again... repeat until it's filled....
use maguiars scratch removing polish and apply some elbow grese when the paint is good and dry... reapply paint if needed...
then just use any polish needed to remove any extra paint being careful nto to remove the paint you put into the chip.... top off with a good quality wax...
I've never shared this with anyone - - only by brothers and sisters in Charger-world.... :wink:
seriously, though - - it works really well... the secret is to TAKE YOUR TIME... there is no rush...