SEO- Rewrite product titles & descriptions for ecommerce

NATIVE ENGLISH SPEAKERS WITH EXTENSIVE SEO EXPERIENCE ONLY. The first project I need done is taking product titles and descriptions that I already have on my e-commerce website, and making them unique by rewriting them, making each one fully SEO search engine optimized. I would also like to have the existing meta tags checked and cleaned up/updated if necessary. Each description will also include targeted keywords which will be provided by me. The keywords must be added to each unique description to make sense and to attract readers to the products. Right now there is plenty of description rewriting for you to do. Right now I have over 8000 products on my site and will be adding thousands more this year. For this first job, you are bidding on 500 product titles and descriptions for jewelry to be rewritten and added to. I will provide you with a spread sheet of all the existing descriptions and keywords for you to rewrite/update. Please let me know exactly how long it will take. I am looking for 20-30 word descriptions that are short and to the point. Titles should be no more than 10 words. When responding to this job, please send me or show me samples of any rewriting jobs you have done, I must see your work, before and after rewriting products descriptions including the targeted keywords and I must be able to see that it is SEO friendly. I can also send you a sample description & keyword to see what you can do if you have the confidence you can do this but don't have a specific example you can show me. I will be very picky. Rate is $0.20 per product.