I just finished the second one of these, and am really excited about how both turned out. It wasn't without some delicate moments, and lots of time invested; however, all the angst was worth it! The assembly video is a must, though. Leo does a great job of showing sequence--which is necessary for good construction. Also, the assembly video on how to program the music is a must (the enclosed instructions are written in tiny, tiny letters). It does take a lot of cardstock (I used one kind for the inner construction and a cool metallic for the outside). I love it!!