I'm currently writing/plotting/laying out a three-issue revival of the
Justice Machine.
I plot the issues as separate components but with threads that continue from issue to issue, tying them all together.
Sunandshadow's comparision of an individual comic book to a TV episode is very apt--I've always used the old half-hour dramas as my models in regards to plot and character development as well as pacing.
The Rifleman and
Have Gun-Will Travel have been particularly helpful in those areas.
Once I have strong idea of what goes on in the issue, I draw rough thumbnails, breaking the story down into panels and send that to artist, indicating negative space for balloon and caption placement, even before the text is actually composition.
I find this method works the best for me and the artist--I don't feel constrained by the script format and I have more input into the overall look of the finished page.
The artist usually prefers it because he doesn't have to figure out ways to interpret the script and lay the whole thing out...I've done that for him.
And if he has a better idea of how a scene should be depicted, that's fine with me as long as it doesn't affect either the plot or the pacing.
Once I receive the finished pages from the artist, I dialogue the issue and make adjustments to accomodate the art...which is the most important part of the whole enterprise.
I know some writers don't feel this way, but they're deluding themselves. You can sell comics with good art and a bad story...unfortunately.
It's much,
much harder to sell a comic with a good story and bad art.