As far as I've seen, you just kind of start doing it. I realize that's not helpful, but it's been my experience. I do think talking to the higher-ups is a good place to start, let them know you are interested in moving up.
Find a mentor. Cultivate some relationship that you have; ask for advice.
Good luck! 
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Why cycling? Anything [sport] that had to do with a ball, I wasn't very good at.
-Lance Armstrong
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