Liam :
http://www.youtube.com/watch?v=iNbVZfkt5vM
Harry :
http://www.youtube.com/watch?v=vAhM4hTxWs0&feature=fvwrel*
Louis :
http://www.youtube.com/watch?v=ccFs5yxaug4
Niall:
http://www.youtube.com/watch?v=PlCLr1Lwb50
Zayn :
http://www.youtube.com/watch?v=VAHLVryra3Y&feature=relmfu