The Proving Grounds, and other comic scripting advice
As I've complained about before, it's hard finding usable advice for writing comics.
So I was pretty excited to discover, via random internet searching, a column called The Proving Grounds, by a writer named Steven Forbes. In each installment, a reader submits a draft of a comic script, and Forbes rips their horrible ideas to shreds. I mean, provides helpful feedback!
It's aimed at people who are trying to break into the American weekly-comic-magazine market, so there's the assumption again that writer and artist will be two different people. Nevertheless, there's a lot of good, useful stuff here about panel-to-panel flow, story pacing, dialog, establishing shots, and what is or isn't drawable. Plus I find it really entertaining when Forbes calls somebody out for "white void", "moving panels", or being "magically delicious" (when something we should have seen earlier appears out of nowhere).
There's another, newer column on the same site called Points of Impact which goes through comics published that week (mostly ones I've never heard of) pulling out graphic narrative devices to talk about why they work or don't work. I'm getting some useful ideas out of this one, too. The rest of the site is not so relevant to my interests.
Sushu's been working on scripting a new comic project of her own. She wrote a good post about killing your headcanon, among other things.