Well it sounds as if your doing the work, but the important details aren't sticking in, or you are misinterpreting a question maybe?
I know this is my flaw at times, as I get hit with a question, I know the answer, but end up wording it wrong or leaving out an important 'key word', which starts to make sense when I got an A instead of an A+ when doing my Unit 2 Business Management Exam, I would be able to answer the question, but often wouldn't supply an example (very cruical in bus man), which is why I would often get 1 out of 2 marks on my definition questions.
So I guess all in all the preparation is there, my only suggestion this year is to cover the course early, so you can spend as much time as possible fine tuning your exam responses, and ensuring that you cover every detail, even the details the question doesn't ask for (to be safe) haha

Good luck this year!
