Love Letter(1)

 
When did I receive the first love letter? I think it was might be the beginning of the new year in winter. Although, we never spoke to each other, but I hazily remembered what he looked like, is like, he was thin, and had a tiny vitiligo spot on his face. He seldom talked.

One day  his older sister (she was one year older than him) who was also my classmate,  handed me  his letter. At that moment,surprisingly, I didn't know who he was him, all I knew about him was his name. I hadn't realized that he existed. I was too scared to open that letter on my riding way back home. Hiding it in a corner of my room, I saw that it was a diagonally folded letter by a very thin paper and there was a "pull up" mark on the letter that seemed to tell me, how to open it.
Among young people, it is popular to fold different kinds of colorful letter pagers into differents shapes, a heart shape or some unsual shape else after class. Later, I had tried to learn to fold a paper into a leaf which was called missing tree and wrote letters to others on it. But I couldn't do it well, most of time I ripped the paper. I opened that letter, and I could only see a line characters under my name.They were "I love you, when I saw you, the first time, I fell in love with you". I felt a little disappointed coz never had thought such a frank person could say such a fancy saying. But that was  my first love letter received. A boring letter.
Actually I had someone else in my heart at that time.If I had received a well written letter, could I have become enamoured? I do not know. Maybe not, but except someone in my heart. Disappointed, I ignored it, I showed the letter to my older sister in the everning. Then"He is a bad boy, soon light the letter and never reply  to him" my sister said. There was a box of match on the desk coz the electricity was usually out in our area and we also needed to use kerosene lamp in winter. Squating with a stick of lighting match in my hand, I started to burn the letter. From that moment on, I did not say even a word to him. I was not following my sister's saying, but I thought that letter was too ordinary.
After a  month passing by, boy's sister came to say to me "No matter I like him or not, could you reply to his letter?" However, at last I  didn't. I do not know why I acted so cold-heartedly.

You are doing great, practise writing with all the enthusiasm and don't worry about mistakes. Just a humble suggestion, try not to mix the tenses (Present and past)

Grammar

'Might be' connotes future

'I think' has different meanings, but we also use this expression when we try to remember something.