Absolutely lovely. I started folding when I was seven years old and the birdbase - the basis of the flapping bird and thousands of other models - eluded me for

Absolutely lovely. I started folding when I was seven years old and the birdbase - the basis of the flapping bird and thousands of other models - eluded me for weeks because I couldn't fill the gaps between the two diagrams I had in front. Seeing it happen like this would have instantly unlocked that. Of course, it would have ruined the sense of satisfaction too, but hey. Cracking work.