How can I get a Taylor Swift Autograph? Look at my description for details?

I sent one piece to her main fainmail address which is very unlikely anything will happen but you never no. next i sent a piece to her next performance in NC. ( they accept fan mail) Then third i might send a big envolope to newmark, NJ since she will be performing 4 shows there and she has two days break before the last 2 concerts so people said the longer shes ina city the better chances you have. Any suggestions? Any Success for anybody?