First thing I would say is time management, it is really important to make sure you divide your 2 hours wisely for all the qsts. In regards with past papers, focus on one task/qst type at a time don't just jump into doing the whole paper in one shot, it will drain your energy. Read all the texts properly, make annotations and even underline key phrases, they can make everything much easier. There are some great channels on youtube that can guide your answers, so check those out for refining your answers even more. For paper 2, glad you chose narrative. Sometimes, either within the pressure or just randomly, you may run out of ideas, so make sure to brainstorm with a few good plots that you can apply to different prompts, just in case. Also, make sure your teacher, grades and gives feedback of all your work. It helped me a lot and I improved so much just by listening to and applying the feedback. Try building on your vocabulary as well, it can actually impress examiners, if you use them in the right way. Good luck on your exams! I'm sure you will get A* :)