Revise

With the storm raging outside, I lay listening to Dudley's incessant snoring, the faint glow from his watch casting a dim light on my face. Counting the dust particles on the ground, I was going to celebrate my 11th birthday to myself. The wind howling outside of the house didn’t make me feel frightening, but the letter sent by Hogwarts School of Witchcraft and Wizardry haunted me. What was that letter about? Was that something about my parents? Second by second, I heard that Dudley's watch began to count, I used my finger to draw a cake with some candles on it, wishing my 11th would be all fine.
Suddenly, the minute I wanted to make a wish, the door slammed open with a “bang” sound. I was utterly terrified,without learning what happened,the thunderous crash woke my Aunt and Uncle.Even the piggy Dudley was woke up .“ What’s that!”, screamed Dudley with his eyes all in round circle. I looked at the door which was fully sized by a gigantic person.“Oh my gosh.” I said to myself with fear and a bit of excitement. I stared at the giant with caution.
“Oh, my god, the rain is really big,” he said to himself and tidied up himself.Suddenly he waved his pink umbrella in his hand , the fireplace began to light a fire .I was in a complete shock, my mind went blank. Hearing my Aunt and Uncle rushing to the first floor and a gun was on my Uncle’s hand, I stealthily concealed myself behind the rocky wall with my heart ready to have a trip out of my throat itself.
“Please leave my house right now sir!” , my uncle shouted at the giant and I could see him trembling all over, out of fear,I supposed,so did my aunt. “ If you don’t leave my house, I will sue you for trespassing!”, he continued. But the giant wasn’t afraid of him at all,” You?”, he asked, and then grasped the gun on my uncle’s hand, bending it out of shape.
I could see that my aunt’s lips turned into white. She was trembling all over.And then, the giant stopped and started to dig something in his pocket. I was just wondering how many things are there in his pocket, then a big box was taken out in his hands. He started to turn around, we had an eye contact for 5 minutes and I found something familiar in his eyes.it seemed that I knew him when I was a child. But it seemed that he didn't have the same feeling as me. Opening the box in front of Dudley and said in a very gentle voice:“Happy birthday Harry.I made it myself，and it's maybe not the traditional beautiful，but it must be delicious”. I was in a shock again, so did Dudley. "I am not Harry." Dudley whispered.and then he pointed at me,“he is Harry."