This tutorial is intended to explain the process by which this material has been developed over time. With each step, we will look at the desired effect as well as the solution to achieve it. The idea of creating complex stylized materials does not have to be intimidating at the artist level, and with proper guidance, anyone can do it.
https://dev.epicgames.com/community/learning/tutorials/J3ea/unreal-engine-deconstructing-a-stylized-comic-shader