It's not a great surface for artwork. Too porous for my taste. But I'm getting used to it. Mostly because I like the idea of sending art to friends and let them know that it before it passed through the postal system, it passed through a sphincter.
The tiger is for a friend that regular sends me Starbucks gift cards, knowing my penchant for Chai. Yup, I barter art for tea.
(Original images are about 4x6")