HAI DEAR ANON YOU ARE SO KIND AND SWEET TO ME HOW WONDERFUL thank you!!! okay so i'm going to reply to this on twt with a couple of screenshots of my current scrivener set-up for writing my current longfic, but tbh it used to be one word doc called "MASTERPOST" that had blurbs about each character traits/arcs, then blurbs about the relationship traits/arcs, and finally a bunch of random scenes/moments i wanted to remember to include! I usually start with a setting + character dynamics, and then develop a vague plot arc and work towards it as I go. i make a point of giving each character an arc even if it's (in the case of star-studded, a previous longfic of mine) "learns to center himself in the narrative but without selfishness" for seungmin/ or "learns to accept his wants/his love" for chan/or "learns he is so lovable/loved" for jisung, like small/simple arcs most of the time. I do make sure all the plot threads are written out somewhere clearly ehe so that I remember and can bring them up/bring them back at key moments! anyway i hope this is helpful, if I'm not being clear pls feel free to ask me to clarify!