I think girls can throw just as well as boys, but I think they don't get enough practice. You won't throw like a girl for very long if you keep practicing because it's just not going to go the distance you want nor have the accuracy you want until your mechanics are good. Eventually you body will train itself to put the arm, legs, and shoulders in the proper positions. So my biggest piece of advice is to keep practicing. Be sure to start slowly though, throwing a ball overhand is not a natural motion for the human arm. It is very easy to get a sore elbow or shoulder so be sure to stretch and warm up properly.
I'm looking forward to our softball season, but I hope it cools down soon, yesterday my Jeep told me the temperature was 105....
