It changes the model of the armor stand to make it more like the player.

To use download the zip file then take out the "better armor stands" folder and put it in the "receourcepacks" folder located in "C:\Users\<user name>\AppData\Roaming\.minecraft\resourcepacks" for windows, I am unsure about mac or linx.

requires optifine.

This is my first texture pack that I have uploaded I hope you like it.

I'll add a better texture sometime in the future.

I use Armor Statues data pack to get the arms.
For help do /trigger as_help when the data pack is installed.
Vanilla Tweaks - Data Packs