Hi King,
The only advice I can offer is that you ensure that you perform all the critical safety elements of the flight. You probably create concerns if you taxi too fast, are not keeping a good lookout, neglect regular FREDA checks, forget to perform the proper HASELL and HELL checks, are unable to nail the best glide speed and forget to provide proper briefings prior to start-up and departure.
In addition I would tell the examiner when something is wrong (off heading, wrong alt, etc) and what you are going to do about it. If you don't spot it he will. He will also give you enough time to spot it before he mentions the error.
Furthermore, set the pace and don't feel pressured to complete a set of tasks in a hurry. During mine, I would tell the examiner when I intended to change frequency or when I intended to check my position - that sort of thing.
A very accurate navigation will also go along way to convincing the examiner that you are competent even if you do make some error or other in the general handling and glide approaches.
Finally, make sure you are familiar with the Flight Manual for the weight, balance and performance calculations.
Alot of if maybe obvious but these seemed to be the things that made an impression on my day. I had a great time and I am sure you will too so...
...Good Luck!
