Here are some corrections.

“I am a graduated sudent of Tsinghua University.“ .. This sentence means you have already graduated from Tsinghua.  I think you want to say "I am a graduate student at Tsinghua University"

"I am in academy of fine arts." perfect

"my English level is poor, so It is difficult for me to talk a loud."  Here it is better to say: "it is difficult for me to speak", but "it is difficult for me to talk", or "it is difficult for me to talk out loud" are also okay.

"During my study , I find English is very important."  This might sound better if you say "During my study, I have found English to be very important".

"so I would like to find a language partner."  Always start  a sentence with a capital letter.

"Definetly, We can help each other."  This might sound  a little more natural if you say "We can definitely help each other". 

I hope this helps.  -Eric

introduce myself

I 'm a graduated student of Tsinghua University. I 'm in academy of fine arts. my English level is poor, so It is difficult for me to talk a lot ...During my study , I discover that English is very important. so I would like to find a language partner. Definetly, We can help each other.