Perfect
I have recently discovered the Faber-Castell Artist pens! The ink is waterproof, the colors are vibrant and rich. The ink does not bleed through to the other side of the paper and so will work on any paper - sketch, watercolor, regular paper. I don't have to worry that it will bleed through. No need for gesso if not part of a mixed media project. Great for coloring stamping projects. All around perfect for any project. Love it.