1. 500 word's article as your requirement and totally unique not spun article. 2. As you know i have a excellent knowledge about SEO (Search Engine Optimization). So you will get also SEO friendly keywords in your article who will get higher ranking in popular search engines such as google and bing and more. 3. I have good command in English so you will also get excellent content as your requirement. 4. Editing is available in article as your require.