Its really a cool piece of Art , and great for any of us who were able to watch it being created in real time .
By doing it at 10,000" its in a quiet airspace , and the track of the aircraft is presented in a different colour to the higher cruise level colour , and then of course the shape stands out even more.
Wind isnt a factor , as coordinates of every turn are typed into flight plan Id say , and push the button ...........