Instructions for .psd makeup:

Turn on the details you want in the "Makeup Master" file. File -> Export -> Quick Export as PNG to save the diffuse image with your changes.

If you turn on any details on the base diffuse, you should edit the specular in the "Specular Master" file to ensure that those details show up regardless of your skin color. To do so, go to the "Specular Master" file and toggle on the details you chose for the makeup diffuse. File -> Export -> Quick Export as PNG to save the specular image with your changes.

To add to your game, open TexTools. Nagivate to your character's race, sex, & face. In the dropdown list for "Material," change to "Material: FAC A."  Change your specular in TexTools by changing the "Texture Map" dropdown window from "Diffuse" to "Multi." At the bottom of the window, click the "..." on the "Import" button and import your saved makeup specular. 