Watch Jennie Finch's hands drop in this clip. Her hands actually arc down and then back up to shoulder height, which puts her hands in a strong position to throw the barrel. The down/up arc of her hands is the hand break in the overhand throw. This is why I keep stressing the importance of teaching the kids how to throw overhand and then relating that sequence to hitting.
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Jennie Finch was famous for her pitching. That swing isn't good. You do NOT want your hands to go toward your front hip and then pop back up to the shoulder. That isn't an arc she's doing, it's a "V" swing, which is not good.