I am glad to stand here
First,let me intruduce myself to you ,my name is ,I`m come from .
I used to major in road and bridge,and most of my classmates were male.
There were several girls in my class.
But,today Ican see so many flowers sit there,this is a great changes to me.
When I studied in previous college,I lived in a state of"Another day ,another dollor"
You kown,somebody said that this career can earned a lot of money.Yes it is .
But,I think a good life is not much concered about money.
So,I change my career and study english there.
This is my advice,when you choose a career,you should have interesting in it.
That all,thank you.

stand here -> be here.
I'm come -> I come
a great changes -> a great change
in previous college -> at college
earned a lot of money -> make a lot of money
concered about -> related to
change -> changed study -> studied
have interesting in -> be interested in
That all -> That's all.

粗看了一下，主要错误指出了。不知你是什么水平，如果要求高一点，基本得重写。