Here is my humble response to this post.
#1 I am not Marcus. However, I have done websites for people ranging from $500 dollars to $10000 dollars (when Wordpress did not exist). I have about 20 years experience with HTML, CSS, Wordpress, PHP, etc. It just so happens I suck at sales which is why I am here
You may not ever see this and you may be upset with Marcus because you feel he did not answer your questions properly. Believe it or not he answered your questions better than just about any Guru on the internet would.
I would recommend that you go to a site like Tuts+, Lynda.com or Udemy and learn some design skills. You need to learn how to "DESIGN"
a website, rather than just "MAKE"
a website if you are going to sell a website to a customer. Design is a lot more than picking a Wordpress theme and then "slapping stuff" on it.
If it appears I am being harsh, I am not, I really wish to help you. I am going through many of the same things as everyone else, my websites are not all perfect either.
However, take a look at the following website which I made for an attorney in Beverly Hills to get an idea. It may not be 100% perfect, but it is clean and professional (at least according to the attorney I built it for) which is all that matters.