The two masks at the top of the post, and the landscape and cartouche below are my personal examples, made for lessons done with my 6th grade students in past years. The two masks above were painted very differently from each other; the one on the left was done with acrylics and is covered with a coating of an acrylic gloss (it might be ModPodge; I'm not sure). The one on the right was painted with watercolors. It gives a very interesting and subtle effect, I think.
this link. Meanwhile, here is a sample of student cartouche carvings.
When carving was done, workshop participants had a variety of paints to experiment with. The tree below was painted with acrylic.
While this flower was painted with watercolor. I think both pieces are lovely!
Yes, it's the mermaid bunny! (below, painted with watercolor)