Based on this XPS model: https://www.deviantart.com/padme4000/art/Tali-Zorah-Unmasked-476320341

I started off with a different pose before settling on this one, the alternate pose is in the Tali03.stl file.

The STL files have extra surface detail included, the OBJ + MTL version is lower-poly but includes textures.

I deleted the face as it would have been hidden behind the visor unless I deleted the visor instead then made one out of clear plastic.

Gun is the "Disciple" shotgun: https://www.deviantart.com/nach77/art/Shotguns-369874734
It's split so print two with one mirrored then you can glue them together.