SEO is a beast in and of itself. Here are a couple of suggestions that may help.
Don't try to optimize the content of your site to get better ranking, write it focused on your customers. Don't stuff your content with keywords hoping to rank better for those; I didnt read your entire site, but I wanted to get this other there for anyone who reads this later on. Google changes their search algorithm constantly and by trying to trick it into getter a better position you could be hurting yourself in the long term.
Try to focus each page on a very specific topic. The more specific you get the easier it will be to rank for that topic. Think about how hard it would be to compete with all of the car retailers in the world. Now think about how it would be to rank for car detailing in {your city or town}. There will be less people looking for that topic, but those that are looking will be more qualified customers. Plus, your only competing with others within your geographic area.
