Website content

I’m looking for a content writer to write the content for a web design studio website. 1. I want native American speaking writer. 2. One page will be 650 -700 words and should be optimized for SEO. 3. All texts should be free of spelling and grammar mistakes. 4. All copyrights belong to me. 5. All texts should be originality and must be unique. 6. All texts will have a keyword density of 8-9 %. 7. All texts should be interesting to read and not just for SEO. 8. All texts must have title tags, description and meta tags words. 9. I need content for 20 pages. I will pay in lots of 5 pages on completion. 10. Please quote me for 5 pages. 11. Provide evidence of previous work.