Nice. Sorry a wave of childish behavior just washed over me: FIRST! ;P
Anyways, I like it! Good way to start off your story. As for mistakes, I couldn't find any grammatical, structural, or text related confusion. Thank you for using spell checker :).
But, whatever happened with the coffee stained shirt? Not a major element, just a simple curiosity. :)
(I'm sorry if I over-abuse smileys, but gosh darn it! they need love too!.)