Amazing Maze Postcard puzzle answer

Answer: do you really want to know!
Clue 1:
try working it backwards
Clue 2:
4 small squares make up a larger square
Clue 3:
Rectangles dont count as squares!
Clue 4:
Ask someone else to count them...
Clue 5:
Do other people get the same number as you? Have you spotted all the same ones?
Clue 6:
Not sure we can give you any more clues...
Clue 7:
There are more than 30
Clue 8:
There are less than 100
Clue 9:
Ignore clue 8- it does not help
Clue 10:
You have made it this far- 40 is the number you are looking for!