You should try (if you're making a tutorial) to make them something more like this: https://www.planetminecraft.com/blog/how-to-rename-items-the-easy-way-1-12/

I'm using my own tutorial as an example to show you that making it more detailed, adding pictures, and not just placing it up like: 1) Do this 2. do that 3. not this but that up there - can really make a difference from people understanding it, and not understanding it. :p And erh... Yours is like.. Yeah I didn't get what I was supposed to do, and I've been playing Minecraft since 2010 :'D