I'm a writer and artist, working mainly in comic books, and living in the South East of England (although I'm technically half Scottish and half English).
I'm the managing editor of Orang Utan Comics, group editor of AAM/Markosia, writer of Alpha Gods, Hypergirl and Hero: 9-5, and also do freelance inking and lettering work for the likes of AAM/Markosia, Slave Labour, Top Shelf, Image, Marvel/Panini and I letter the official Doctor Who graphic novels for BBC Books.
Orang Utan Comics - Alpha Gods - Hero: 9 to 5
So, I often say, “If you want to write comics, then just write comics.” Which, I know, is a little trite, no matter how true it is. The obvious response is, “But how do you write a comic script? Is there a set format I should follow?” The short answer to that is, “No.” Unlike movie scripts, there is no industry standard format for writing comic scripts. The important thing is that you make all of the information clear to whoever needs it. For example - dialogue and captions should be clearly distinct from panel descriptions. You’d be amazed at the number of times that, as a letterer, I’ve found random lines of dialogue or SFX buried away in panel descriptions. Personally, I’d recommend using a script writing programme like Celtx to write your scripts. It actually has a “comic script” template which will format your script for you.
However, there are as many different ways of writing a comic script as there are writers. In today’s edition of “let me Google that for you”…there is a website called The Comic Book Script Archive which has an archive of comic scripts for you to download and check out. Worth checking out if you want to get a general feel for how it’s done. However, as I said, there’s no real set way of writing comic scripts…the important thing is clarity. If your intention is clear, and everyone involved in turning your script into a comic can clearly understand what you are trying to communicate then it is a good script.