Depending on how long it has been since you won, give the seller time to respond. Not everyone is at the pc all the time, though in saying that if I had an item due to finish i would make sure I checked in.
As you have not paid you at least have no concerns about loss of money, and if the seller has not replied in a couple of days I would send a request to cancel and move on.
Not sure there is much else that can be done, but someone more knowledgable should be along soon with more advice.
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Map out your future, But do it in pencil, The road ahead is as long as you make it.
Make it worth the trip.
Jon Bon Jovi
