i ripped the assets from action taimanin and i'm trying to reassemble them into blender. i loaded the body through .fbx but it doesn't come with the face. i loaded the face with a .obj file

after i applied the texture to the face her eyes weren't properly painted. there's a separate file for the eye textures. i figure i have to compose them in such a way that the eyes are masked to map to a certain .png, and the rest of the face is mapped to another .png

so the situation in 1. is the face texture applied to her face. in 2, it's the eye texture. with 3 and 4, it's the uv editor showing that the faces are properly mapped to the pngs, i think (i'm still learning)

i found this tutorial on how to do what i think i should do (layers? on uv maps?): https://www.youtube.com/watch?v=JArsx558uCw

i tried it but it didn't work. i tried without the mask and it looks like 5. on 6, i loaded up the face mask that came from the game's resources (black border on it comes from the blender ui), added a uv map to the face but the result i'm getting is not what i expected

can someone tell me how to fix this? i don't understand why it isn't working