I think the importance of good communication is so important. For example, when we entrusted our son to illustrate a 'welcome to the world' card for an upcoming baby shower, then my brief was this:
"Remember that it's in celebration of a sweet little baby, so design something...nice. No blood, nothing involving poop, and absolutely no scenes of carnage or scariness."
I communicated this clearly, simply, and succinctly, and made sure that when he returned after diligently laboring on it, I verified that his card depicting a fanged vampire holding a cigarette was absent all of the items I had communicated to him.
That is clear communication.
"It's not really scary at all,"
"But it might be a little disturbing."