Like so: the base textures have UV1, and another texture with transparency is used for expressions on UV2, blinking and some speech. Most game engines reserve UV2 for lightmap uvs though

Fun tip: you can have more than 1 uv layout/channel for a mesh and with some very simple shader magic, you can use those uv maps to layer textures on top of eachother. Older N64 and ps1 games (N64 pokemon for example) used this technique for all the facial animations.

For Blender specifically, selecting sharp edges, mark seams and then an angle-based uv unwrap can win you a lot of the battle. For straightening UVs (like for a pipe), 'Follow Active Quads' is a massive time saver. You just need a face with with aligned UVs for the isĺand to follow

There's lots of little things about UV unwrapping and what tips work well depend on your software of choice but 2 big things that help are: keeping consistant texel density (How many pixels a mesh face has), and a good uv layout can save you work texturing in some cases

Feelin' 4 u dawg

Also here's the raw video of this render, probably the last time I'll use this specific model for a while.

I never lost hope! NEVER DOUBTED FOR A MINUTE! THE SILKSONG IS REAL!!!!

Looks awesome!

This is the short in question, just some gameplay of Party Business Supreme: youtube.com/shorts/rOpU_...