Tbh, it is fairly easy. I would recommend just doing loads of past papers, to get used to what the examiner wants to hear in the essay. Geography is also not very strict to the textbook and is open to any case studies and events happening around the world - so read the news.
I would also recommend learning all the terminology (sustainability, equity, agglomeration, etc) as it is a clear sign to the examiner if you use advanced terminology you have an idea what you are talking about.
Good luck next year!