I also found that downloading previous papers from ACCA and not only studying the context, but how the answers were set out helped a lot. e.g. columns for ‘identify’ ‘explain’ and ‘reccomend’.
I also had the benefit of practical experience of auditing so applying that logic alongside the theory asked in the exam helped a lot.
I found that F8 was a very similar exam to F4.
Incidentally too – since it was mainly a theory exam I didnt watch any of the O/t lectures in this subject and only spent my time reading and making notes. I also never tried any practice questions.