Today I'll share my technique for painting the scratched petrol armour as seen on the Skaven in my Spiteclaw's Swarm warband for Warhammer Underworlds. This technique can be easily adapted to any model you would like, for example, Space Marines, T'au battlesuits, Chaos Warriors, and more.
The Army Painter Warpaints
Lahmian Medium (Technical)
1. Basecoat the armour with Incubi Darkness. Over a light primer such as Wraithbone you might need to apply two to three thin coats.
3. Next, highlight the edges of the armour with slightly thinned Sons of Horus Green. The opacity of this paint is mediocre, so you might need a second pass to build up sharp highlights. Once the highlights are done, you can add some scratches. Use thin paint and the smallest, sharpest brush you can find and start applying thin and irregular scratches in random areas. It's surprisingly difficult for the brain to paint irregularly, so I googled a scratched texture and used it as a guideline to create various shapes and patterns.