Time being scarce, Fokine, apart from showing the dancers their moves and timing, left certain details for them to fill in themselves. When Bronislava was practising her Butterfly dance, it was Vaslav who invented and taught her the rapidly changing positions of the arms, now together in front, now behind the back, and the fluttering hands which, with the non-stop movement, seem to us today the essential characteristics of this role in Fokine’s famous and much-loved ballet. We can imagine the brother, putting on his coquettish face, flitting about the room and then correcting his sister. Bronia stayed up half the night perfecting in front of a looking-glass the gestures he had shown her. So what was possibly Nijinsky’s first effective essay in choreography was embedded in a work of Fokine’s, just as Leonardo’s angel is said to smile from the corner of Verocchio’s ‘Madonna’ in the National Gallery. Vaslav’s mind had perhaps already been directed by Diaghilev since the last summer into thoughts of doing choreography.
It was Grigoriev who told Diaghilev about ‘Carnaval’.
Diaghilev looked up from his exercise book and said that he did not particularly care for Schumann, and that though he had not seen Fokine’s ballet, he had heard that it was arranged for only a small number of dancers and would therefore be unsuitable for a large stage. However, Benois arrived at this point, and, on hearing my suggestion, supported me....
Richard Buckle, Nijinsky: The Revealing Portrait of the Legendary Dancer (New York: Simon & Schuster, 1971), 129-30.