Related datapack "AS Collectible Cards (Datapack)" recommended, otherwise you can only use the resources of this resourcepack via commands like
/give @s stick[item_model="as_cc:packs/example"]

if you want to edit or expand this resourcepack for personal use:

get python if you don't have it
    get pillow(PIL) if you don't have it, it'll be needed for generator_screenshot_to_texture.py script
        (Optional) get Visual Studio / VS Code for ease of use

preparations:
    set your minecraft instance's aspect ratio to be 1:2, I used 400x800
    (Optional) I have changed my FOV to 40, try changing FOV too



tools and sources I used (credits):
    blockbench, vs code, paint.net, misode(on github), minecraft.wiki