Request For Help - Chinese Tutor Sign

This question is for advanced speakers. I would like to post a sign at my local supermarket for a request for a Mandarin Chinese tutor. I think my only requirements (after the money haggle) are that the person have some English, excellent Mandarin pronunciation and enunciation. That is, not the s-zh-sh problems of some of the dialects.

Would someone help me formulate a small, simple ad for a tutor? I would hand write it in simplified on a 4 x 6 (or even 3 x 5) index card and hand it up on the community bulletin board.  I don't want to embarrass myself!