I used to fly balloons, now I teach in steerable aircraft with engines.
One of the constant surprises is the inability of many students to make any sort of assessment of a field surface based on its colour and texture - they have no idea whether the green field is rough grass, smooth grass, wheat or oilseed rape. It's not a skill you can easily teach in the course of a PPL. I have the benefit of a couple of decades of studying fields from the air to fall back on.