Nelly and Lil are twins who are as different as night and day. When they have an assignment at school to write about their likes and dislikes, Lil does hers right away, while Nelly goes outside to play. When she realizes her sister is finished with her assignment, she adds to it all about herself to create a joint project.
The characters are stereotyped to the N'th degree and the watercolor and pencil illustrations are very cute. I saw my childhood friend Kelly and myself in the two characters - and I am definitely Nelly and she was definitely Lil.