Project for proofreading the content of a web page (9000-9500 words) already written in correct English by a non native. The English needs to be very good. Besides proofreading and improving it wherever possible, some keywords need to be included in some of the pages and keyword density in these pages increased. I will need an invoice at the end of the project. If somebody needs to see a sample of the texts to be proofread, I can provide it.