请问我的英文自我介绍有什么问题没有?请指正.

请问我的英文自我介绍有什么问题没有?请指正.
My name is xxx.I graduated from Hunan University in july 2003.I majored in the Accounting.I had gotten Master of Professionl Accounting from Hunan University in 2008.Since my graduation from the university,I havd employed for 1 year in the China Merchants Bank.Then I have an teaching exercitation for 6 years in Hunan university of technology.
I usually read a great deal of relevant accounting,psychology,education,and other series of academic papers from magazines,which makes my accounting teaching experiences greatly increasing.I have subscribed some professional journals such as:Accounting Research for a long times.And I often exchange experiences with accountants.I have published some articles in certain economy magazines.
I majored in the Accounting and I have had got my B.A.degree in July 2003 from Hunan University.I had received the degree of Master of Professionl Accounting from Hunan University in 2008.And I got Certificate of Accounting Professional in 2004.After my graduation from the university,I had been working for 1 year in the China Merchants Bank as a bank staff.Because I'm capable of more responsibilities,so I decided to change my job.And in october 2004,I worked for Hunan University of Technology as a teacher.
I usually read a great deal of relevant accounting,psychology,education,and other series of academic papers from magazines,which greatly improved my knowledge in accounting teaching .I have subscribed some professional journals such as:Accounting Research.I am skillful in searching for information which I can keep up to date with developments in the accounting and other relevant professional development in Internet.And I often exchange experiences with accountants.

一些字句和语法的修改意见：
I majored in Accounting
I had received the degree of Master of...
After my graduation.I have been working for C..M...B..for 1 year
Since 2009 I have been doing teaching exercitation in Hunan.which will last for 6 years.
...which greatly improved my knowledge in accounting teaching （因为你是阅读,不好讲是增长了experience）
I have been subscribing.,such as 后冒号去掉...for a long time
in certain magazines太笼统了,最好具体说出来.
总体看来,整个介绍比较简单,用了很多的I:I have.I had...I read等,最好多变换句式.