Dear little brother,
Knowledge is really important in life and the more you know, the more successful you will be. You are still young yet getting started, I promise you won’t regret it. Read lots of books since you can create an imaginary world and gain knowledge of vocabulary. Read newspaper to understand our society and the events currently happening
Did you get your certificates photocopied ?
Could you add the sentence?
also if this is the sentence then
This sentence should be reviewed to compose it more precise.