As the name suggests, this is a template for almost all paintings in the game, not just the ones for art gallery.

Recommended mods:

https://modworkshop.net/mod/15158 - nervatel's convertor will speed up the conversion of the texture files from .texture to .dds and vise versa

https://modworkshop.net/mod/27741 - Diesel Bundle Viewer is used to easily look through the game files

https://modworkshop.net/mod/43476 - The Gallery, map meant to view the majority of the paintings

https://modworkshop.net/mod/15928 - Mod that enables the unused paintings from art gallery

https://modworkshop.net/mod/16250 - Template that helps to edit the art gallery paintings

Drop this in mod_overrides