This is a great idea for any sort of DIY artwork: trace a simple graphic onto three canvases, and paint. So much more esthetically pleasing than if you were to just trace and paint onto one canvas. Plus i love the whale idea for a little boy room :)
Got an old canvas print you're tired of? Glue some stuff onto it -- buttons, broken jewelry, shells, fabric flowers -- look around your house. Another idea to steal -- button letters on fabric panels - so many possibilities!