I did hsc latin and latin ext last year and got 50 in ext and 96 in latin, just giving u this so i may persuade u to study the way i did haha- my main tip is learn the seen translations anyway u can, i just translated them over and over to the point where i pretty much had it memorised, i used the latin as my guide- focus on getting ur seen translations perfect, they will be the easiest marks u get in the whole hsc. For grammar, I had notes on basic grammar and I also wrote above the words in my texts, eg. present subjunctive. For stylistics, just know ur techniques, get used to looking for repeated sounds, alliteration, especially words with m and n, which creates gravitas. For unseen, dont just go for it, devise yourself a method of how you will go about it. And good luck!