Thanks for your answers, Jan! Yes, I already figured out something to do with the canvas paper. I just wondered about whether certain backings would be counter-productive to the canvas paper (e.g. acid-wise, etc.). I found a hard board on Blick that looks like it would fit the bill. As for the white paint, I read (on another site - I think it is Wet Canvas) that some very different and significant effects are achieved with some of the whites. I can't remember, however, if these were related only to traditional oils or not. I think someone mentioned liking "lead" white a lot, but it seems that this paint is no longer used, or is combined with something else (dues to the lead/health concerns). Some of the differences included opacity, tint, etc. So many of the manufacturers offer whites under different names and I can't tell anything about them. At least with traditionals most people are familiar with flake, lead, titanium, etc. In WSOs it seems that the only constant when it comes to white paint, is the titanium. The rest of the "whites" offered by the different manufacturers are up for grabs to someone re-entering the paint field after so many years, not knowing how all these different whites present on a canvas! Which is why I was hoping someone who uses WSOs could tell me the name of one of these other whites that they like, and why!