Improve Website

I am looking for someone to help me improve my website. I'm looking for someone who can review the existing content and enhance it according to my preferences. I have some existing content, but I need someone who can create additional content so that the website is more comprehensive. Furthermore, I have a list of tasks/keywords to be used which will make the job easier. In addition, I have a specific target audience in mind, so I would like the content to be tailored to them. The successful freelancer must have excellent writing and editing skills, as well as good knowledge of web writing and optimization techniques.