A child with blond-hair looking out of a screen door.
A blond haired kid looks through his front door at the mailman.
A screen door is not necessarily a front door. The child looking out of the door is not necessarily looking at a mailman.
The child can be looking at anything and it isn't necessarily the mailman.  The screen door can also be at the back or side of the house.
Just because a child with blond-hair looking out of a screen door does not mean he is looking at the mailman.