the exam is wayy easier than the yr 9 entry one so in terms of preparation just work on time management and strategies to get as many marks as u can. for verbal and numerical just work on some basic worded problems and for writing it would most likely be creative so just practce writing essays with good structure and vocab. for the application u would probs need many achievements cos macrob is competitive but whatever extracurriculars u currently do just try build on that idk what to tell u for application sorry.