Use the Notebook section for that, though: http://www.italki.com/notebook

My corrections are in capitals: I will write a text here every day and I need someone to correct me. If that person is a native speaker it will be great. I need to improve my writing SKILLS. I will help you WITH Persian and Swedish

I noticed someone by the (nick?)name Bill Kelly is posting regularly in Swedish, and I got the impression that he is a native English speaker from the US (?). You could perhaps check with him, he might be interested in exchanging for, or cooperating around, the Swedish language.