Activate the pack
1. Put the downloaded pack file into your resourcepacks folder. You can open this folder from the game with Options > Resource Packs > Open Pack Folder.
2. Go back to the Resource Packs screen. The pack appears in the Available list on the left.
3. Click the arrow on the pack to move it into the Selected list on the right.
4.
If you run other packs that change mob models or shields, place this pack higher in the Selected list so its models take priority.
Test it in a world
1. Load a survival world. Damage-based visuals show up during normal combat.
2. Find a hostile mob, such as a zombie at night.
3. Watch it before you attack. It should move with smooth, natural limb swings and facial expressions.
4. Hit it a few times without killing it. As its health drops, it should start to look injured, with visible blood and wounds, and it should begin to limp.
If the mob looks vanilla, open the Resource Packs menu again. Confirm the pack is in the Selected column and is not being overridden by a pack above it. If the mob looks vanilla but your shield changes, check whether your setup needs anything else to show custom entity animations.