Watched a friend lose a big branding job because his book was all polished logos on white backgrounds. The client said it felt like buying a cake without seeing the kitchen. He took advice like @nina834's, added a page with his terrible first sketches and the client's weird change requests. Landed the next one because they said they could finally see how he fixed problems.

Imagine the weird power trips you could have with that setup. Host a dinner party and quietly lock the chatty guest in the bathroom for a time out. It's the kind of flaw you only find when a kid points it out, then you realize you've been one wrong move away from a home made panic room this whole time.

Forget the paint, that stuff blocks light so the plant can't even photosynthesize properly. It's basically a slow death sentence they're charging extra for.