In English, handwriting is generally seen as girl is the mini. caps are almost as large as the maxi. caps, the edges are rounded out, and if the dots are replaced with little cirles reminiscent of the japanese period (。). What characteristics are common of handwritting considered 'girlish' in Japanese?
Generally in Japanese handwriting the more feminine something is the more rounded out and cute it will be. If I think of girly English writing I think of neat bubbly letters while guys tend to be sloppy and angular. This carries over to Japanese.