Decals of freckles on the face divided into layers. You can set them up together using any image editing software or internally using a plugin like Decal Maker.
At first I was trying to bake some combinations together, but the results were working well on some skins but not on others. So I decided to approach the situation in a different way; in this case, using something I had done on some previous decals...
Instead of making my own combinations geared towards specific skins, I split the decals into layers and leave the customization to the users. That way you can set the opacity of each layer as you see fit, turn on or off any layer you want, as well as set them in whatever order you prefer.
The VAR Freckles_Face contains 6 decals:
...\Textures\CasuaLooks\Freckles\Face\faceDecal_Freckles_Face_L1.png
...\Textures\CasuaLooks\Freckles\Face\faceDecal_Freckles_Face_L2.png
...\Textures\CasuaLooks\Freckles\Face\faceDecal_Freckles_Face_L3.png
...\Textures\CasuaLooks\Freckles\Face\faceDecal_Freckles_Face_L4.png
...\Textures\CasuaLooks\Freckles\Face\faceDecal_Freckles_Face_L5.png
...\Textures\CasuaLooks\Freckles\Face\faceDecal_Freckles_Face_L6.png
The "L" in the filenames is related to the recommended order for the texture to be loaded in the [plugin/image editor]. But at the same time, I also recommend that you experiment with different orders and try more varied customizations.
If you want to see more textures and decals to improve the quirkiness or style of your looks, consider supporting me on Patreon. Also, I'm always open to suggestions, regardless if you're a supporter or not.