I was glancing around and stumbled on to Aiko's (we miss you so much) topic about what natural japanese looks like. I wanted to see if there were places that could give examples of the different types of natural handwriting she described. So far, I haven't found one, but I did come across this site and Its counter part. It not only allows you to practice kanji (although only a select few), it has different font styles, from MS Chino (the one you see when you type japanese on your computer) to Gyousho (a kind cursivy form of calligraphy) to three that look more handwritten. You can take the examples and "copy" the styles, or just modify your style.
Kanji SiteKana Site