More to explore:
Very cool, fun art shading project from Art With Mr. E.; he's an elementary art specialist. Try this with your kids (but I think grown ups would enjoy this too).
Cool art project
6th Grade-Op Art
Great art project. Original done with 4th graders but I think all grades up and adults would enjoy too!
Art journal ideas!
fun art for kids
New Op Art project
This looks like fun. I want one.