Ah, this is a very good method indeed. I think I can incorporate both chaperoned's method and your method as well.
I was honestly thinking about writing her biography in bullet points and going from there once I've written out a skeleton.
For everyone else reading these comments, the journal I'm rewriting is jingna if you'd like to track my progress. Feel free to make comments as I'm writing too. I'll be editing this character for the next couple of days until I feel like she's complete.