I used an acrylic white grey colour, thinned with some drops of water, to paint the main winter camo. And then I did the chipping effect again. Once dry, was time for the new tip discover on this build I used this paper as a mask!! And I painted with aged white colour over.
Mistake: My mistake was, after applied the dark camouflage, I masked it wrong.... over the dark colour about 0,5 mm (just to safe the light colour was close the dark one, not silver between...) Went I did the chipping effect the lines have appears.
Advice: If you have followed this thread, you must see I don’t work with varnish. So the best form to apply a pin wash (for me) is: Take a clean brush and humidify with white spirit. Then “paint” the lines or the rivets. Just wait a moment and then add the dark wash with a very fine brush. If you add so much paint, just wait about 3 or 5 minutes and with another clean brush with white spirit clean the lines. The best product on these moments is the enamels!! If you use an acrylic wash the thinner can damage your previous work and the oils are so slowly to dry... with the enamels and white spirit you don’t will have any kind of problem.