Very helpful Helliboy.
I'd just emphasise that it's really important the student enjoys it. You're teaching a PPL so it's for leisure and there's a shocking number of students that get the PPL and rarely much thereafter. Therefore I think it's really important that the student enjoys each lesson.
There seems to be an increasing number that you'd think were waiting to see the dentist! Often the ones that are desperate to do the PPL in min hours..
Equally, so true about being relaxed and positive, the latter point being a particular problem for FIs that are just waiting for the airlines.