I have been watching James Gurney use Casein and gouache and I wanted to try the Casein since i love gouache so much. So here is a try...I sketched with brown ink, then painted with watercolor then went back with the Casein. It is just an opaque watercolor that has been lused for centuries. It is made using milk. I don't really know much about it, even after googling it.
This is the Saddle shop in Post TX.
