I think your main problem here is that you spent 2 hours on it. I'm not sure how much of that was reading up on the essay methodologies and so forth, but even if you spent an hour doing that you're still wayyyy over time. Another problem is that you typed it and that's allowed you to write a much longer and subsequently more advanced essay, so I'm hesitant to give you feedback on its quality given these two things.
I don't completely buy your essay's connection to the two prompts, but they're pretty vague prompts so it's not that big a deal. You write well with your own particular style, which is good, since examiners are completely bored of essay format #283. In terms of content matter, it's not an academic essay so it doesn't require anything in particular. I'd stay away from anything particularly controversial (religion and IVF is borderline), don't comment on highly political events etc.
I'm sure you'll do well, most of the things I've highlighted aren't really substantial but are more about your approach and so forth. At the end of the day, you just don't have time to construct a detailed and complex plan for each essay, or write something that's a thousand words long. I just looked up one of my old practice essays and it was 500 words and I (bias alert) think it's pretty good. So be aware that given your 30 minutes per essay, less planning/thinking time, you're going to need to make sacrifices on what you've done today.