Well from seniority point of view you seem senior than me on this forum.Well talking about the strategy regarding exams you should follow the threads linked to each and every subject on css forums.
English essay being the most critical part requires high command over english grammar coupled with indepth analytical and literary ability.
You can develop it by practising the previous exam papers without any cheating.Discover your own hidden potential and pinpoint your mistakes.You may also upload your writings for correction on this forum or you can gice it to any of your friends.
Similarly Composition part requires much practice and Preci is the most important part of the exam.Go through Dawn newspaper and look for a column by a reknown journalist.Start making its preci on your own.Do it for a month.Than go to css past papers and try to attempt the preci part.This would be helpfull.
Rest of the exams also require analytical approach as CSS is no more cramming.
Have a bird eye view of th threads continued here on css forums.It would be a great advantage for you.

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