Hi!
2. What does the module want students to do for creative writing?I would definitely have a look at the prelim syllabus as it's going to tell you exactly what is required of you.
The HSC Craft of Writing module requires you to know your prescribed texts well, so that you can write a creative piece - whether that's imaginative, discursive, persuasive or an informative text based on these texts. You may also be required to write a reflection on your writing. So it wouldn't hurt to start thinking about and developing these skills now, even before your HSC year, as they will still be helpful for prelim.
Are there any ways to improve a piece?Sure there are!
This article was originally written for the old English syllabus, but it contains boundless tips for improving creative writing technique. I definitely found it very helpful during my own HSC!
And as cliche as it sounds, to improve, you need to practice! Try writing under timed conditions, to get accustomed to thinking on your feet!
1. How do you increase vocab?"Descriptive words and fancy action verbs" can be great. But what also can be great is actually just arranging "normal" words in a way that demonstrates a skillful and artistic control of language.
Perhaps have a look at some sample exemplar creative pieces (these are usually available on the NESA website) to gauge what kind of language they use. You might find that these don't just insert fancy words here and there, but rather, their language as a whole demonstrates sophistication and composure.
Hope this helps! Just remember you still have plenty of time to improve!