I just sand it to whatever degree of finish I want, clean it, and leave it. I usually stop at 220 on canvas because it seems "grippier" there and the looser weave of the canvas base material doesn't look as good (IMO) at higher grit finishes. I take linen down to 2000 grit and then buff. I guess because of the tighter weave, it looks better and better the finer you finish it. It's not as "grippy" at any grit as canvas is. I haven't worked with paper, but I'd like to try some on a kitchen knife or two. I bet it can look really good with a fine finish.