This is kind of the wrong question, really. If you really feel like you need to "educate" your client to get him to accept what you are going to do, then you are working for the wrong person. If they are already your clients [and you are not still trying to sell your services to them], then they would hopefully have known enough to know why they hired you and what to expect. After that, it's a question of how much they want to participate in the project.
The best clients are the ones who ask questions during the process -- why are you putting a bunker there? Would you think about moving the green to the left? The only goal of "educating" them is for them to understand why you've built the things you've built -- so that they are more likely to be sympathetic to your choices when the questions inevitably come from their members or customers.