Meet the The British-Iranian cellists Leila and Sara Shirvani

This is a must for every professional. You must be able to manage your time wisely – from your practice sessions to your live performances. If you have gigs, make sure to respond to every invitation and call back immediately if you can commit or not. When playing in an orchestra, arrive at the venue on time or at least 10 minutes early. This also applies to your practice sessions. Make sure to set a specific time for practising where you feel the most energetic and productive.