I still think the solution to this is easier than people give it credit for. Don't write female characters. Write Human beings. Come up with a person's personality, character traits, backstory etc before you put things like gender in, unless their gender directly ties into their character arc. Gender IS a part of who we are, but it doesn't define us. Heck, it's pretty easy to make a balanced cast of genders in my opinion.
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http://s3.photobucket.com/user/neko-hime-cfi/media/FROMASHES2-1.png.html?filters[user]=3916024&filters[recent]=1&filters[publicOnly]=1&sort=1&o=41