What exactly does SEO (search engine optimization) mean? It means generating and organizing your online content in such a manner that search engines can appropriately rank it for the related keywords and key phrases. If you are writing a page on providing content writing services or blog writing services then the search engines should be able to rank that page higher on the SERPs (search engine result pages).
Of course your source code must be free of unnecessary clutter and you must have the right information in your meta tags, but the real SEO juice comes from your content — what you are writing to describe your message. It’s important to know what keywords and expressions must be used and avoided; you don’t want to rank higher for all the wrong keywords (there is no harm in it but that traffic gives you a false sense satisfaction and that might be bad for your marketing efforts).
So decide on the topic, make a list of the words you must use to describe that topic and then start writing. Talk about the subject and try to focus on it — the search engines prefer focused, targeted content. Just be careful not to overdo it. There is a very thin line between keyword stuffing and optimized content.