Hey! I've had a read of your creative and I really like it - You've got a great writing style and exhibit some excellent use of technique. Love the use of symbolism and figurative language. Do be careful that you aren't using imagery for the sake of using imagery, meaning, make sure you are putting the time into the things in the story that need describing and really benefit from the extra investment. If you use imagery and over-describe everything, it loses its impact - Kind of like getting bored of an awesome dessert if you have it every night I guess

I think this
could be used for Discovery, but in its current form it isn't quite conceptually suited (imo). The story would focus on a lack of Discovery or barriers to new understandings, but really this is a story of
loss right now. You could easily mould it into something about Discoveries stemming from loss, or similar, but it will definitely need a tweak. Especially if you want it to work for the variety of stimuli that the HSC can potentially throw you!
On mechanics, ensure your dialogue takes its own line and sounds realistic. Try and minimise how often that prominent words are used in two consecutive sentences, it does tend to throw the reader off. Finally, nsure the reader has a way to ensure that time has passed or we now have a new frame of view - Either a horizontal line across the page or some dots
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Like that ^^