painting is located in textures/painting/kz.png
8192x8192 texture file (512x512 for each block).
Aimed for Minecraft Bedrock Edition.
Tested successfully on Minecraft Bedrock Edition 1.16.0 on an iPad Pro.
Mar 8 2021: Fixed a issue in the composite .mcpack file that prevents the user from importing the file.
To install this pack, download the KZPainting.mcpack file. Upon opening this file through standard file manager, Minecraft should open and installation should proceed. Or you could place this file in your-minecraft-directory/games/com.mojang/resource_packs folder and restart the game.