go over it with #0000 steel wool lightly. or use the time tested dirty thinner wash. or alcohol with a few drops of india ink. although as you start to read up on weathering (the military guys do magic things with paint) most successful jobs are a combination of several steps & layers.
inventiveness sometimes depends on your pain threshold and willingness to compromise.
or just hold off until you can get some Dull-cote. certainly finish the rest of the model in the meantime.
a can will last quite a while if you make sure the nozzle doesn't get clogged.
I tried one of the Revell kits (in a smaller scale - 1/32?) when I was about 8 years old. I think it was the '58 Buick Special. that pretty much cured me!
great set of instructions and assembled kit you have done.
I keep a jar of #500 on the bench in the putty box. mix it with a round toothpick & apply with same. great for small scratches, seams, & ersatz scrapes. let dry, usually overnight, sand, and move on with life.
sometimes (as in the case of the distributor cap) you can put an assembly together dry and then apply adhesive from the underside where any excess might go undetected on the finished part.
another thing that might be helpful to remember: if you put adhesive in the female part of the joint, any excess squeezes into the joint rather than out and around the opening.
these ones are pretty good - and come in about a bazillion sizes: http://www.ziploc.com/Products/Pages/ContainersSmartSnapSeal.aspx?SizeName=Extra Small Bowl
kfc will kill you slowly . . . .
archer transfers http://www.archertransfers.com/ASSETS/SurfaceDetailsPg4.pdf
http://www.modelcarsmag.com/forums/index.php?showtopic=72253&hl=louvers#entry900343
micromark reportedly has something similar and more moderately priced, but i couldn't find it on their website.
http://www.micromark.com/dry-transfer-letters-numbers-and-graphics.html
http://www.modelcarsmag.com/forums/index.php?showtopic=74106&hl=louvers