I loved the American cover art and the chapter arts so much..I liked most of them, Mary drew them perfectly..Actually I liked how she drew Ron and Hermione..espeically Ron..Harry was perfect at the cover art but Voldemort wasn't too good..My fav are Chapters 1,3,7,10,22,23,25,31,33..And this pic I found it in Leaky Cauldron but I don't think its related to chapter art but it's by Mary I think