Loved it! :) The only improvement i could think of is that in "training mode", when you fail, it goes a bit too far back, making it a little encumbersome doing the same thing over.
The second thing is that it would have been nice to be able to click "next" with the space button, instead of having to switch between space and mouse button. But those are tinnyyyy things :D THis game is unique and creative! And very satisfying.