Then don't create a prototype to begin with. I have had zero issues when clearly communicating these things. If you want me to prototype things, then fine, but

Then don't create a prototype to begin with. I have had zero issues when clearly communicating these things. If you want me to prototype things, then fine, but I'm not signing it off to production. If they overrule me anyway without a really good reason, I'll find somewhere else to apply my skillset.