Kengineer-130,
As above.
Take Summer for example, and you're navigating VFR. Assuming no or little cloud cover below you, the higher you are, the closer the ground resembles the map in your hand. Just have to be careful you don't call 'overhead' somewhere just because it's disappeared below the nose or the wing, because it could still be 5 miles away!
As you descend towards circa 1,000', the countryside starts coming up to meet you to the point of starting to distort what you see relative to your map. Contours are more noticeable.
And down towards 500', mid-summer, it can just become one big blur of green, yellow, brown and bumble bees flying through the air vents
p.s. This may not apply in Wales, Scotland or the Peak/Lake districts!!!