Not bad for a first try! I'm happy with how it turned out, and I learned a lot. For instance: be careful tilting the paper to get your colors to blend! It could get away from you and, oh, leave a streak of bright red across your piece. Oops! I know to be careful next time.
I think I got impatient with the values, too. I might go back and add some more depth/shadows on the mug body at some point. It looks too flat to me.