How to write an evaluation on the narrative Tommy by Kelly Ruth Winter. Need a jumpstart.

Firstly, talk to your teacher and/or read your instructions carefully.

Secondly, take notes while reading it several times.

Thirdly, outline your thoughts on it based on your notes.
Fourthly, write a draft that focuses on its good points and bad points (plot, characters, description, pacing, and other elements of the writing).