I did my Licence Skills Test (similar to a GFT, to revalidate my licence) last month. I was concerned about the PFL so walked it though on the ground - 2500' engine dead, and actions through to landing on the selected field.
Then I just decided to forget the nerves and enjoy the flying.
I made a mental note of the wind direction on take off and was lucky enough to have an smokestack showing the wind direction very clearly when the examiner called the failure. I immediately went to best glide speed and turned downwind - everything went according to the earlier rehersal right down to the 100' point when lined up for landing on the field and then climbing away.
Just relax - don't put yourself under pressure to pass as that can make you tense. Make sure you always have trim set so that you can fly by your fingertips - easier and less energy wasted.
Good luck
