Thanks Harry, that's what I always do. First thing I do even before the primer is scribe my lines with the back of an X-Acto #11 blade partially dull, try not using a brand new one for this, it will go all over the place. You have to work with a lot of patience and very lightly at first.
After that, just use thinned down paint, it has to be very "watery", capillary action will help here. Usually, after this initial step, you will not need to add any more paint but even if you do, since the lines are scribed nice and deep, it will be easy to do it after the body is painted!
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