ART DIGRESSION: Surfaces to paint on
With watercolors, I prefer a fine paper made for such. There are lots on the market. Cold Press means it has a rough or textured surface to it, and Hot Press means it's really smooth. Depends on what you are doing and what is needed. If you want a loose painting, I advise Cold Press paper, or if it's rather tight, try Hot Press. Yoshitaka Amano once advised me to try rice paper because the ink or watercolor disperses so much it forms it's own patterns and you see these great accidents happening before your eyes.
Working with Gouache, or Acrylics, I prefer illustration board. Acrylics is also nice on canvas board as well, and you can get some great dry-brushing effects. Dry brushing is when you take a brush, that has a bit of paint on it and gently brush it across a darker color that's painted on something very textured. Illustration board is simple bristol board which is mounted on a thicket piece of cardboard. Bainbridge and Cresent made good boards for this.
I've painted on everything in my life, so this is just passing on some info for students and others who might be interested in experimenting with surfaces or, are curious as to what I use!
Very busy these days! Something visual soon!