If this is a person you really love, and really wanted a signed picture of, then I would try again. However, if it's someone you only moderately like, then I don't think I would.
Through the Mail: Catherine Tate, Jayma Mays, Matthew David Lewis, Marion Ross, Millvina Dean, Billie Piper, Sandra Shipley, Aldis Hodge, Camille Coduri. In Person: Cast of Wicked (Broadway 2008), Cast of Xanadu (Broadway 2009), Cast of Equus (Broadway 2009), Cast of RENT: The Broadway Tour (2009), The Goo Goo Dolls, Naia Kete Waiting for: Joshua Jackson, Seth Gabel, John Noble, Jasika Nicole. Writing To: Kevin Corrigan, Blair Brown, Anna Torv, Meghan Markle. Most Wanted: Emma Watson, Rupert Grint, Alan Rickman, JK Rowling, others here.