Re: Grammer and vocabulary check
Please edit your title to correct the spelling of "grammar".
You must capitalise "I" every time you write/type it. We "make" mistakes, not "do" them. It should be "enlighten" (bare infinitive) not "enlightened" (past tense).
You really need to look at your choice of tenses throughout. You have frequently used the present perfect of past perfect when the past simple would have sufficed.