"format_version": 2, "header": "name": "My Texture Pack", "description": "Custom textures", "uuid": "generate-a-unique-uuid-here", "version": [1, 0, 0] , "modules": [ "type": "resources", "uuid": "another-unique-uuid", "version": [1, 0, 0] ]
For creating skins, the Skinpack Creator for Minecraft Education is excellent. png to mcpack converter