I tend to think that handwriting tells a lot about one's upbringing and educational backgrounds. I was born left-handed but my parents forced me to use the right hand to write letters (a common practice in Japan at the time). I always make an excuse for me being a terrible handwriter because of that. But hey, I can now write while eating! (I still use chopsticks with my left hand.) Anyway, there's a lot of characters (not pun intended) that one can learn from one's kanji writing, because its blocky shape tends to reveal how rigid you follow the right stroke order, etc.

And then I found that the handwriting by Chinese people is awesome. They're very stylish and it appears that they still treat kanji writing much like calligraphy in China, while in Japan we mostly treat them as blocks. I wonder what secret they teach to kids in their schools.