who are you writing this script for? just yourself?
if its just yourself, you can format things however you want, and whats important is what works for you
for example, heres my scripting process:
1: plot plan
(in grey bc its an old chapter)
ive developed this from a step 0.5 where i lay out all my story points and put them in order of happening rather than scene, and then divide this up into the scenes i want to have in the chapter, their order, and key action points that i have at time of writing. the colour coding refers to what characters are in each scene, as i want to keep a balance of screentime (pagetime?) for various threads of the story
2: chapter drafting
(taken from ch9 rather than 8 bc my formatting changed a bit)
here i break the chapter down into its every scene and happenings, noting down more details - you can see its very focused on actions, dialogue is largely not present yet, just the content of the information being exchanged. i only note down dialogue ive thought up that helps illustrate to me what im going for, or smth i want to remember.
sometimes at this stage i go into a lot of detail and describe opening panels and specific sequences, sometimes theres a lot of 'maybe this' and 'maybe that,' for me to figure out later - and sometimes ill just say 'they fight - two pages' and figure it out later.
the colour coding here breaks the action into estimated two-page updates - the red is two pages, the pink two pages, the orange two pages, etc. this im considering changing bc it sometimes forces me to cram action into a page when it needs more space, but im usually pretty good at estimating how much space i need, and is useful for making sure every update moves the story forward.
at this point im able to estimate overall length of the chapter and length of each scene
3: page by page
this is the part i actually call scripting in my files - i usually find that this point is a lot less detailed than drafting though, because i already have a good idea of what im up to. but that depends on the chapter and how im feeling. it continues to focus on action and this is where i make certain that something happens in each update and each update has a hook
theeeeeeeeeeen the final stage:
4: panel by panel
here is where things get very short and snappy bc at this point im also thumbnailing and the script primarily serves to A: remind me whats going on if i leave a page mid-thumbnail and B: keep the dialogue
sometimes i make clear what kind of 'shot' i want, i use a lot of terminology from film and comics alike (eg the last panel of ch10 was describes as 'upshot balor splash' - it was a worms eye view full page panel of balor). this would be difficult maybe to communicate even to a different comic-maker, but these shorthands work for me and thats whats important.
however, say i was writing 8/1 for another artist to draw, itd prolly look smth like this:
8/1
1: extreme closeup, bleed panel at a tilt, cath grabs balors hand
2: extreme closeup of balor's eyes, a reaction shot under the water, facing right
3: same for cath, determined expression, facing left
4: cut-in ecu of caths feet slipping on the stone, small panel
5: bleed panel, cath falls back to the right of the frame as balor flies out of the water and on top of her
6: mid-shot, cath faces away from us as balor hugs her tight, both are in the left of the frame and text on the right
this uses consistent terminology and makes your vision fairly clear for the artist (i coulda gone more specific, but eh), but isnt necessary when scripting for myself bc, like, i have the thumbnails right there. without thumbnailing i wouldnt even be able to come to this level of detail in terms of composition
this has been uhhh... really long, but basically its all about communicating with yourself, making sure you get down all information you might forget (ie all information), and using scripting terminology can help you explain to yourself what you mean