Using source assets, Houdini, Photoshop, Python scripts, and finalizing the asset in Unreal. This should give you a good base to work off of for decal creation. python script can be found here: https://drive.google.com/file/d/1GQeC... I use Spyder for this but any IDE should work, I just enjoy spyder's environment manager for scripting. There are multiple ways to setup alpha erosion, / 1425481955664089098 choose your favorite from that list