Starting with this release, the VoodooDoll CIT edition has been discontinued and replaced by Vanilla Custom edition. No more mods required, the resource pack works fully vanilla now. That's thanks to Mojang introducing a similar feature in 1.21.5. LambDynamicLights remains optional.
There have been some minor bug fixes done to the 3D models, which should cause less errors.
To update from VoodooDoll CIT to VoodooDoll Custom, the best way is to start from scratch and follow the new instructions. You also need to make sure that you're playing on Minecraft 1.21.5 or newer - any older versions, that aren't covered by CIT Resewn, won't receive support.

A resource pack that changes the totem of undying into a plush toy version of the player's model. This is the Vanilla Custom edition of this resource pack.