Its usually all in my head lol if I’m honest. I have (what I think anyway) is a cool idea or concept, and just work on it in my head for AGES. Turn it, flip it, change it around in my head and MAYBE start writing once I’m pretty satisfied. I keep this notebook, which is sort of my thoughts, a diary if you will for the script.
You guys are much more organised though lol. Making me feel guilty.