so, small update. i built a pinhole camera to take fullsize photos and did some work yesterday with 11x14" paper. results were... not ideal. the long exposure times really hinder getting adequate feedback, and i was really panicked to get the work done on a schedule. this means that my poor results with the process were probably exacerbated, but at the best of times it can be a little unpredicatable (particularly when i'm relying on my hand to do reliable timing on the second exposure).
no time to post results, not that they are good anyway, but just wanted to mention that i was still working on it.