8x10 Oil on canvas. This has an under painting of acrylic with oil on top. Does anyone know if this is a bad thing to do? I read in a book that you are not supposed to put acrylic under oil, but I've also read that it's okay. Only time will tell if it is going to crack. I wanted a dreamlike feel to the painting, but I think it turned out kind of eerie because of the dark shadows juxtaposed to the bright yellows, oranges, and greens.