I want 9 letters (350 words, divided in 3 paragraphs) to be written from Ben10 to a kid.
Wish a kid happy birthday
Wish him/her good luck for exams
Kid, Don't be naughty
Doesn't study and avoids going to school
Who doesn't drink milk
Kid, Get well soon
You are a wonderful kid
These letters have to be fun to read, written with a lot of imagination.
Key point: A good opening - creative story from Ben10's life and experience connecting with the topics - convey the message and end it.