It's exactly as it says on the tin,  this is a modders resource for creating texture maps for use in BG3.  Currently supports both humanoid skin and armour. The download comes with the shaders themselves, export presets, and project templates. It also contains a guide with installation instructions and general use information, as well as a collection of skin presets taken straight form the game for you to use.

I hope you find this helpful, if you have any feedback or ideas on how to improve this resource, please let me know.

If you would like to get started editing skin textures for BG3 but don't have access to Substance Painter, feel free to check out Volno's Texture Toolbox! Which is a collection of tools and shaders aimed to help you edit textures inside of Blender.

Additionally, if you're making textures for bg3 I highly recommend also grabbing Baldur's Gate 3 Substance Painter DDS Exporter by Aloija who has made a number of great modding resources for bg3.

Thank you to the following:
Aloija for both her original set up for substance painter and for beta testing this shader
Norbyte and Bartalon their for help with the GLSL
Kaz for listening to me yell about Adobe's shader API
AlitheaAncunin for proofreading the guide
and The BG3 Modding Community members discord for their help

Check out some of my other BG3 mods
Glizty Horns
Trashy Tattoos - Unique Tav
Older Jaheira
The Amazing Drider-Man