In my GCSE English exam, I have to describe a place, an event or a person, I think.Would I be able to write a fantastic description to memorise and...

As somebody who has taught GCSE English but also marked
GCSE English Language exams, let me give you some advice. What the exam is testing your
ability to do is to write attractive and eye-catching descriptions of a certain
scenario, event or person. Part of the mark is based on your ability to use figurative
language (similes, metaphors etc.) yourself to convey a distinct visual image of the
thing you are trying to write about. Because of this, learning an excellent descriptive
passage off by heart is not going to help you, as you have no way of predicting what you
will be asked to write about and your description may not match the thing you have to
describe in the exam.

It is much better to practise at this
stage writing descriptive pieces for a wide range of possible topics that you could
receive in your exam. How would you describe your earliest childhood memory, for
example? How would you describe the person who has had most impact on you in your life?
You need to brainstorm these topics, identifying what is notable about them, and then
trying to remember what sounds, sights, smells, feelings, and so on that you associate
with them. Then you need to consider how you can use words to bring that person, or that
event, or that place, to life. I would argue this is the best thing you can do to help
prepare yourself for the exam. Learning a descriptive piece by heart will not help you
in the exam and it will come across as unnatural and stilted. Good
luck!