How do I go about requesting a presidential pardon?

I got arrested over some total bs and got sentenced to 6 months in federal prison. I was convicted by a jury of my "peers" for allegedly beating off on an airplane but the whole thing is just a huge misunderstanding. I heard recently that the president can exonerate you from any crime which I think would be totally justified. Is there a phone number where I can reach him or talk to a representative or something along those lines?