Jeff,
That looks great, you and your daughter did an amazing job. My ONLY suggestion would be to use coroplast in lieu of the foamboard only because it will last just that much longer. You can normally buy coroplast at craft stores (Michaels, Hobby Lobby, etc) or from a local printer (the kind that construction companies use for printing our blueprints and stuff).
I actually use coroplast to make all kinds of decor that I put into my animations. Things like musicians that move between two poses to look like they are playing along with the music or even talking. I bring home a projector from work and use of all things MS Paint to make my pics then the projector to transfer them manually to the board with a pencil. Then the coroplast boards already have 1/4" spacing lines from their construction so light spacing is a snap too.
Good work,
Corey