I've noticed that our son sometimes has his own creative order in which he writes the individual strokes in his letters and numbers. So for example, here's the official way to write the number five:

But he might draw the top line first, and then write the rest of the number after that. Same goes for how he writes the number four.

In Japanese, it's a huge deal if you write the strokes in the wrong order... but I did some googling just now, and it doesn't seem to be a big deal in English (for letters and numbers).

What do you guys think - does this stuff matter?