Installation instructions:

Using geode's Texture Loader mod (recommended): On the main menu, open settings, then go to Graphics > Textures and press the folder icon on the bottom right. Put the zip file inside this folder, then, back in game, press the refresh button and the pack should show up! Move it over to the applied section, then click apply to confirm. After loading, your custom pack should be ready to use!

Manual install: You'll need to locate your game's installation directory. On steam, you can right click the game, then click Manage > Browse local files. From here, open the Resources folder, then unzip your download directly into this folder. When you try to do this, you should get a popup asking if you'd like to replace the files, and that means you're in the right place. Let it replace all the files, restart your game, and the pack should be ready to use!