why you wish to study the programme and how the qualification is relevant to your career aspirations, as well as your expectation of the programme.
Look at each part of the instructions. "Why you wish to study the program..." You need to talk more about the program. Show that you know a lot about what you are about to study in this program. You should also talk more about your career aspirations. I think the information about your background, GPA, and so forth is probably going to appear somewhere else in youar application, and maybe it is betternot to repeat it here. If possible, it will be great to use a memorable theme for this essay -- a theme associated with your number one aspiration.
Here is a small grammar correction, nothing too important:
My job covered almost all the costumer media which reshaped me into a mature and realistic media man.
I want to cross out a sentence that has a word that I think it not a real word (convincible), and also I think this sentence is not helpful. It just takes up space:
It is quite convincible that my adequate work experiences can make me get well-prepared for the new media market. I am eagerly looking forward to studying at your department. With your guidance, I will play a better role in
China's new media industry.
Great ending! But I had to add an apostrophe and an s at the end of China. :-)