For your essays I would advise to work on your vocabulary, try to learn as much as possible and then start improving your grammar. I got 85\90 in my paper 2 but its a lot of practice. I would also advise to go through all the examiner's reports and do all the past papers if you haven't already as that will really help you improve. Also make your phone language in french or something, actually include it in your everyday use and you also need to know your basics in grammar. If you ever need help for french I would be happy to help.