Take some online test as you think a different SC member would. Post who you tested for, the results, and add any relevant insights to what guided the choices.
It can be any online test, so long as it's linked to in the post. It can be a "legit" personality test or something else. Have some fun with it or push your agenda with it or bait an argument over it or whatever nonsense you want. Of course, the test subject someone uses can turn around and put their tester through the same test.
SUBJECT: Edvard
TEST: https://www.16personalities.com/
RESULTS: https://www.16personalities.com/estp-personality
As for insights to my subject above, well... I operated mostly on how I've observed in SC chat and so forth. Ed's reasonably confident, doesn't seem to be easily swayed from his course, and (at least on the surface) comes across reserved but with some underlying mischief that lets him slip past some people's defenses.