This was a little self-absorbed-teen-angsty, but that is the age of the character and I remember those days too. (I hope I have mostly grown out of them... :/) 
 That said, the pictures were very interesting and the author had a wonderful ability to show how she felt through the metaphor of the picture. The other nice thing about the story was how normal it showed her plight to be. It's hard to be the new kid and it's always hard to meet true friends and then keep them. I actually thought her transition into "take charge project planner" seemed too quick and easy. She had doubt and set-backs later, though. 
 We all worry about what others are "really" thinking of us and when we are young, it's even harder to handle. This book showed that problem clearly and sensitively.