WookieeM

Just don't use the built in brush or nib it will be far too big.
 
I use a matchstick and cut the end off at an angle. Then dip in the paint and apply in tiny bits.
Applying it this way prevents great big blobs of paint which are noticeable.
 
I've done a few on the bonnet this way and its hard to find them now.
 
 
Ensure its nice and clean before and any wax etc removed.