Originally Posted by Gwyn

If you can not cut around the flaw, you might try aging the entire piece with tea. You could even "tie-dye" it a bit by tying knots or using rubberbands to bunch the fabric up so it isn't died perfectly. Then the whole thing would be more evenly stained. I've done this with old crochet thread, white satin and cotton fabrics. If you like aged look, it might work.