If I can write it by own.please tell me how can I do it?

You start by picking a book and reading it unless one is assigned to you.

Then what you do is summerize the contents of the book. How wordy it is depends on the size of the expected report.

What grade are you in?

You read the book then write about it. It's easier to decide whether you're going to be negative or positive about it before you start. If you're going to be negative, make it sarcastic and funny but don't just state what's bad about it. A pun is always a good way to go for the title and make sure to use rhetorical questions and lots of good adjectives :)