I am learning japanese writing for some years now, I learned it by myself, by the help of some very good websites like the one and only
http://www.csse.monash.edu.au/~jwb/wwwjdic.html, where you can search see beautiful animated gifs of any jouyou kanji and many more, and my first learning site
http://www.kanjistep.com/ and
http://japanese.about.com/ try it out, I would recommend it.
Naturally I wrote (and still write) most kanji and kana in squares, but I was surprised, how the japanese write: Often the kana are more smaller than the kanji and they are often nearly unreadable for me, because they are small and often only indicated. It needed some experience and imagination to decipher normal japanese handwriting, especially the kana. In spite of the kana you can have an impression from the kanji in jiashens handwriting photo. But that is normally, look at your own romaji, in my case it doesn´t look like the textbook version nor like the versions, I learned at school - it is something between...
Some kana and some more kanji are slightly diffrent from their schoolbook versions, i. e. そ and 言. Sadly in my own language aren´t any good schoolbooks to learn japanese, I couldn´t find rarely information there about that. Perhaps in english written schoolbooks may be more information available.
Also I still did not found any information about another japanese writing style, which appears to me like a waterfall, from the above to the ground, right to left and very fluently. It is very, very beautiful, but I am often completely unable to read this. I want to learn this, but don´t know, how?
So it may be a good Idea, that all of the japanese staff from JPod101 gives some handwriting samples to us? Not the book versions. It may be a series about differences between used handwriting and printed kana/kanji. Perhaps there are any tips how to learn the beautiful "waterfall"-font also?