No don't tea stain it, that should be done only with a piece of cloth that hasn't been sewn, from my past experience, even then the tea stain is not always well distributed on the fabric, I tea stained the fabric on a table cloth years ago and found that out. Just leave it as is and enter it or whatever you plan to do with it, but please just don't start tampering with it now, it is too gorgeous to mess up.