The question of irregularities

In the blender, you can turn on the roughness. Depressions and pits on the model. How do you achieve the same result in UE4?

Can you share a screenshot of your configuration in Blender?

texture

I don’t think UE has that effect natively. The best way to do that would be to do it in the Post Process material… but it is fairly complicated. Maybe you can find a tutorial on “cartoon” effects.