Didn't stay at this panel very long. It was by two Atelier folks, one who worked mostly with digital, and the other mostly in analog. Some of the main points were:
* keep your corners vacant, don't want to put important stuff there
* establish a grid, keep focal points away from border region
* spacing to border can establish mood. Squishing character against border creates sense of claustrophobia.
* tie your panels together. beyond the Marvel-y techniques of pointing and looking to establish connections between panels, try to lock panels together by echoing curves and shapes from one panel to another.

Most of everything else was a Photoshop tutorial, and the room was uncomfortably warm, so we jetted. I was hoping for something more along the lines of showing a bunch of different comic book pages and deconstructing their composition, rather than a live demonstration of composing a page, but that's more my learning style.