I just did min last week.. I used an airbrush which I have 0 experience in.. What worked for me was keeping the flightsuit dry. Also for the paint, I poured paint thinner in a cup, then some paint, stirred them together, maybe a little bit of water, then poured it in the airbrush cup.. multiple coats/ colors.. black, charcoal, brown
Here's the first couple days of spraying.. if you look at the pouches.. you can barely see any there.. thats how it turned out when using a lot of water.. (I barely used any paint so thats partially why) the bottom is the second layer when wet.. Once it dries it fades a quite a bit..
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Here's when I started when dry and a brown coat
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Since then ive added another black layer.. but yea.. layers and dry flightsuit worked for me