Very cool, I liked the animation and Ive always been fascinated with nail boards.
My only crit is that you could have added some very slow and subtle camera movements for the whole thing, similar to the pong section but not as strong. The camera could slowly glide around, because with a still camera you just fix your sight on the nailboard and the rest of the ‘negative’ space around the board is wasted, when it could be moving around and adding another dimension of interest to the whole animation.
You could even go as far as rotating the view around the board 90 degrees or more so another edge of the nailboard becomes the bottom of the image and the image has to rotate and adjust to the view of the camera.