UV Wrapping and Baking into UE4 Steps?

Alright got it Ill go look for a indepth foundation to UV mapping tutorial.

So at the end of the day all his work still must be mapped…

And when you say polypainting is very limited in features, what features do you mean?
The high polygon count is also not a problem since at the end of the day we still need to bake the high poly’s texture onto the lower poly model anyway right?

It seems he can still get a very realistic face
and the only unique aspect is that he would be rendering the his painted polys to a texture, only later in the workflow.