Could you review my pronunciation? And give me tricks and tips to improve it ?

It's a fragment of one of the letters of the book perks of being a wallflower, let me know what need to improve in my flow and pronunciation, I wanna really get better at speaking in English:

September 18, 1991 Dear friend, Inever told you that am in shop class, did 1? well, I am in shop class, and it is my favorite class next to Bill's advanced English class. I wrote an essay for To Kill a Mockingbird last night, and handed it in to bill this morning. We are supposed to talk about it tomorrow during lunch period.

-- The perks of being a wallflower