帮我看看这段话中有没有错误``谢谢噢

帮我看看这段话中有没有错误``谢谢噢
A wonderful day,boys and girls!I'm glad to stand here again.Today I'll let you know my favourite star Aaron Carter.
Aaron Carter is a pop star in America.He has a big family.
There're five people in Aaron's family,his father,mother,brother and a twin sister.He's twin sister is younger than his brother .Aaron was born a minute later than his twin sister.So Aaron is the youngest one in his family.Few days ago ,he finished his birthday of 18 years old.
Aaron's brother is Nick Carter.Nick is a famous star.I am sure some of you know him .He is a member of BackStreet Boys.
Aaron Carter is a perfect boy.He does anything well.He likes doing many things such as piano,ski,drive,guitar,drum,saxophone and so on.Now 他在一个全球知名的大学里读书（翻译下）
I hope one day I can meet him in America.So I will learn English harder.If you think he is great so let's learn English harder.

这里是改完的,可以对照参考一下.前面写的都不错.:)
It will be a wonderful day with you guys!I'm glad to stand here again.Today I'll let you know my favourite star Aaron Carter.
Aaron Carter is a pop star in America.He has a big family.
There're five people in Aaron's family,his father,mother,brother and a twin sister.He's twin sister is younger than his brother .Aaron was born a minute later than his twin sister.So Aaron is the youngest one in his family.Few days ago ,he finished his 18th birthday.
Aaron's brother is Nick Carter.Nick is a famous star.I am sure some of you know him .He is one of the members of BackStreet Boys.
Aaron Carter is a perfect boy.He does everything well.He likes playing many instruments like the piano,guitar,drum,saxophone,and also likes skiing and driving.Now,he studies in a world-famous university.I hope one day I can meet him in America,so I will learn English harder and better.If you think he is great,let's learn English harder.(最后这句话的意思不太好.那个歌手伟大和努力学英语好象没有必然联系.可以自己再改改.