Hey there! Ever since I’ve decided to write longfics (especially the plot heavy ones) I’ve started planning everything ahead of time. That’s not to say things don’t change as I go sometimes, but I line lining out the main plot/conflict points. So I always start with a list of characters and info about them (this helps with omegaverse cause I always forget what their scents are lmao) and then bullet point everything I want to happen in the story, some more detailed than others. I’ll post this on Twitter after with some examples! But with DTM, for example, I always knew what a lot of the conflict between Seonghwa and HJ would be, and what the main motifs and symbolism would be etc (the paintings, the collar, the stars and golden hour) but the order the events have happened has changed quite a lot to give the relationship more depth. I also love writing found family, so as I go through the story and come up with more pack dynamics scenes etc then I add it and it just gets longer. I do something add things that readers ask for or I talk with friends about haha but the main outline and events are always written ahead of time so I don’t lose the plot and details. I hope that makes sense! (There are some things I don’t plot out… for example, the newest milfhwa multichap I’m writing is just vibes and what smut I want to write next lmao)