Have a look at the battle-worn Barricades I made. If you'd like to see how I achieved this look than just follow the link to my blog where I have put together a step by step tutorial: https://legion-outpost.blogspot.com/2019/02/battle-worn-painting-tutorial-barricades.html
bloge here: https://legion-outpost.blogspot.com/2019/02/battle-worn-painting-tutorial-barricades.html