Try not to take the attitude "how can I get through this test" but instead think "how can I impress this man".
Every time he?she askes you to do anything DON'T RUSH - just take your time, work it out in your mind and do it well. Even with a diversion it's not an emergency - take a while to study your chart then do what you want. Always a VERY good idea to mark the wind direction on your chart before you take off so that you don't get caught out with your emergency landings.