So I typically write screenplays but I've decided to try my hand at writing comic scripts. I've been reading comics my whole life (mostly manga) and have access to plenty of original scripts. I also got my story and everything planned out but now just as I'm starting, I have no idea how to determine the right number of panles for a page. I've read the average is about 6, but then there are also splash pages for big important things. How do you decide how many panels to use?

I wish I could just write the script and have the artist decide how they think it would be best formatted. I heard that's how Marvel does it, or at least used to. I know that it's just a 1st draft and the artist will be able to change things to make things better but still.

Any advice is much appreciated.