请帮我改一篇英语自传吧!主要帮忙挑下语法错误~因为太长这是后段

请帮我改一篇英语自传吧!主要帮忙挑下语法错误~因为太长这是后段
My middle school time was little complicated.I started to like Japanese cartoon during that time however my drawing skill was very bad.I also started to like play online computer game at that time.I had played the well-known online game WOW and some Chinese online game.I gave up playing those online games quickly because I took a lot of time on it and it effected my studying.The last year in middle school was the most terrible time in my school life because of the Senior high school entrance examination.I studied hard and did almost one hundred tests to practice.It is difficult for me to just do one exam to decide where the high school I enter.I was not a stable person.I always did one good exam and then do a bad one.Finally,my Senior high school entrance examination marks not good and I feel uncomfortable.
I am a high school student of GCA now.In this high school,I found a new hobby and new friends.I joined in the dancing club but I did not want to join in this club at the beginning.I could dance a little however I had not confident enough to show.My friends like dancing and joined in dancing club,so I also joined this club.After I joined in this club,I knew this club builds for Hip hop.I tired to dance and better than before.I like Hip hop and always practice in free time.I need to thank to the Mona who can be called “Cindy’s first street dance teacher”.
For reading,I like mystery stories or historic stories.I always like reading some books about Chinese histories like “Records of the Historian”.I like historic stories because I have strong curiosity.
For my future,I would like to finish my university courses in Toronto but the major course I have not take a decision.I would like take choose the music,history,laws or economy to be my major course.