Please correct my writing mistakes...

hi i am sama kariminia i come from iran .can u do me a favour and correct my mistakes in writings…i am so grateful if u do me this favor …regards

TOEFL listening lectures: What does DNA analysis reveal about the domestication of horses?

‘I’ not ‘i’
‘you’ not ‘u’
‘writing’ not ‘writings’
Iran’ not ‘iran’

Hello Kariminia

Just write your essay and put it on this forum.
You should click on new topic button and put your essay. Your topic should be the name of the post.