This was super cute, I dig your style
When I was reading the todo list I was pretty worried at first that I wouldn't know where the homes for each piece were. But you did a really good job indicating where they belong even without a pointing arrow. The silhouettes for classic paintings were a nice touch and really gave them some more character.
My only criticism is that I did have some trouble getting the browser version to fit on my display. It took a lot of tweaking to make sure your view wasn't getting cut off. I'd recommend allowing a fullscreen option for maximum portability.
Some day I hope to be swole enough to lift a dinosaur over my head. Great game!