I picked up a pack of Yupo synthetic paper a couple of weeks ago, I wanted to give it a try. Iy feels like painting on plastic. This paper has a lot of benefits you can use a lot of water on this with out it buckling, use pretty much any medium and if you make a mistake you can wipe it of and start over, however I did notice mediums that have more pigment will stain it. I am still experimenting with this paper and this is one of them, by the time I finished I had myself a little galaxy. This is also one of those unpredictable tools of an artist.