I was going to try and write it but to be honest I can't do justice to a 40 min brief and a demo. The brief does included running around the briefing room making aircraft noises with bits of paper on the floor and a fan running.
Its exactly as homeguard points out.
At all points you are using the wind as a tool.
Either to help you see a field or to help you cover distance to get to a good one and of course to get you in.
Low wing I am a fan of constant aspect, high wing I used to demonstrate both it worked for some but not others.
The other thing is if your really having problems with PFL's go and do some gliding. I never had a single glider pilot who struggled wth PFL's, one of the buggers even gained 500ft when I pulled the power on him. Made sure we were well away from any ridges after that.