Okay, so this is the book one cover.
Sophie looks good. She's excited and amazed, which fits her situation, but she should also look a little sad too. She also has a cape on, which we notice that it has a crest that looks like the Ruewen Quest.
I think this scene is from the end when they are escaping but she would look tired by then, kinda haggard, and her clothes would be torn up and battered.
It took me a long time to figure out that the other guy was Dex. He looks like he has buck teeth and his hair is just wrong. Also, he looks like he has purple eyes. They should be blue
-Kate Aka. ItsAllAboutTheHair