@daeus-lamb This is a really cool subject.
I almost always come up with characters first. Being an artist, I usually visualize them first, and then move to personality, then base the character arc off of the personality. Almost all personalities have “weaknesses” that are easy to turn into flaws (like introverts struggling to get along with people, or dominate personalities taking too much control). I believe that all stories should be character driven, so I then use the character arc to map out the plot. External events match the “points” in the characters personal internal journey.
If I’m struggling to come up with character arc, I’ll do some of the plot first, and then ask myself how those things can help push my character out of their comfort zone internally.
I look forward to hearing how other people do it!
Not all those who wander are lost.