User hums "It's a small world after all" . . .
Ain't it just. And I don't even have a roundy head.
I'm wondering how much description in each panel is too much? Is there such a thing as too little info? Is there an acceptable limit that will still give an artist the latitude to explore?
Well...the way I deal with that issue is to determine how important an individual panel is to both the story as a whole and that particular page.
If the page features a new scene (say at a certain place in downtown Athens, circa 100 BC), in the establishing panel, you should provide as much description as you can so the artist can work it in throughout the remainder of the scene, whether it's one page or three pages long.
Y'know...all the local color...statues, temples, chariots, merchants, tourists from Cimmeria, that sort of thing.
The artist doesn't have to cram everything into that establishing panel, however.
If you look on page...uh...page 52 of the
Everything Guide to Writing Graphic Novels, you'll find where I provided an example of doing rough breakdowns or layouts for the artist to follow.
That way you'll be be assured of getting everything in there you think is necessary as well as saving the artist some time and labor.