大家看一下这段自我介绍有什么问题,我要去参加英语比赛,在此感激不尽

句式太单一了,都是主谓宾,可以尝试用一下复合句啊.
My name is ________.I am am fourteen years old .There are four p eople in my family,including my father,mother and grandparents.Not onlu am I a happy boy,but also a friendly classmates.I often make my friends laugh.so that I have a lot of friends.《Do you want to be my friends?I am welcome everybody.》（这句可有可无）
In my spare time,I like going hiking and reading books,which can expand my horizons.As a junior school student,I am do well in all subjects,especially mathmatics and English.I wish my English could be improved in the next four years and be able to speak fluent English in the future.

我认为唯一的一个问题就是：I live with my father,mother,grandpa and grandma.这句有点繁琐，建议改为：I live with my parents and my grandparents.