I have a ton of Black Series 6" figures and I use them for toy photography. The problem is, Hasbro doesn't do the best job of painting the faces of the humans. The sculpts are there but skin tones and eyes/facial hair isn't as good as they could be.

Does anyone have any tips and tricks?

Supplies lists to do it right?

Links to tutorials?

Any and all input would be appreciated. I want to have a go at this, but not without a good idea of how to go about it properly