Need unique articles & website copy around specific keywords

I need some killer copy which must be UNIQUE (this will be checked) for my website centered around different keywords. You should have PERFECT English and be capable of writing an informative, lively piece with no spelling mistakes or grammatical errors. Each page will target just ONE of the following keywords as the primary keyword/keyphrase and I will require a 400 word article/copy for EACH of the following: acne treatment skin face care acne treatments clear skin natural skin care facial treatment organic skin care facial mask facial treatments blackhead remover oily face facial masks acne mask The copy needs to take into account that the product being promoted is a moor mud and therefore the keyword must be used in conjunction with promotion of the product. You should build in a small amount of time for research into moor mud and my website prior to writing your copy when you place your bid. I will expect all articles to be completed within 7 days and once I have made payment copyright reverts to me – you must NOT reproduce the copy anywhere else. I will make a milestone payment once I have approved 2 of the articles and another at 6 articles. I will NOT pay for any article which I cannot use due to poor English, bad spelling or grammatical errors or because it is copied from another source. You will be asked to re-work the copy OR the final payment amount will be reduced by a proportionate amount. I will expect to see samples of your work before awarding the project – so please PM me with details. If there are 2 or more similar quality bids I may ask you to write a sample article using one of the keyphrases for which you WILL be paid (via paypal) to decide on the winning bidder. In the event this happens you will need to decide on a rate for just one article initially. All fees are the responsibility of the bidders.