French Conversation Exchange (possible group?) (Heidelberg)

Hello! I am new here at Internations Heidelberg, but I would really love to be more involved in General! Something that I would personally find very interesting (as a linguistics student) is a conversation exchange group. For those of us looking to brush up this or that language. I would offer my English, for example (I have a TEFL certificate!) for French (I want be become fluent, like I am in German). I would also offer the same for Spanish. Eventually even Arabic and Manderin, but that is way ahead of my current time! If anyone else has similar intrests, please contact me or post on this thread! Even someone who can explain German grammar to me would be great, because even though I speak German fluently, I still make mistakes!
Ideas?