Hi ibry,
No need to be worried, the test invitation will tell you what to bring with you.
Basic idea is that those photocopies you attached in the initial application you will need original to present to the officer during the interview.
Only one thing you need to take extra care, your COPR.
COPR is required for the interview, but NOT required in the initial application.
One thing I would go the extra mile is that If you traveled a lot in the eligibility period and there is not so much entry stamps to countries you traveled to on your passport(s), I would recommended bringing your own proof of travel history. e.g, entry record of the country you went the most.