Valentina ha fatto 2 video spiegandoci la sua tecnica .
parte 1
https://www.youtube.com/watch?v=1fEQTX7SdLU
parte 2
https://www.youtube.com/watch?v=LsodHfZ7RQE
parte 1
https://www.youtube.com/watch?v=1fEQTX7SdLU
parte 2
https://www.youtube.com/watch?v=LsodHfZ7RQE