I've pretty much got my layout exactly the way I want it, but I'm still looking for a way to shrink userpics in the comment pages only. For example, I would love to get the userpics here about half their normal size.
I've gone through many of the memorised tutorials, and I haven't found exactly yet what I'm looking for.
For reference, my layout ID# is 6604675 and it's viewable here, and it's currently in use at my journal - moveablehistory.
Thanks for your help. :)
edit: problem solved - thanks kunzite1!