No more new textures, so it will work with patch 5, DLC, and hopefully any future patches.
1. Remove older version or other variety mods (and less gloss mod for v1.06 and before only).
2. Unzip and put the pack file to your data folder (usualy C:\Program Files (x86)\Steam\steamapps\common\total war shogun 2\data).
There is no need to edit your user.script.