i have used some stretchy velvets in the past- best to use a stablizer- or foundation- it helps keep the stretch controlled. no reason to not use it- you just have to not stretch it as you are sewing- or you will have ripples. my darling sister tried to use a stretch velvet as a final border on her first quilt- boy did she have a time! it was more of a ruffle- once we took it back off & added a fusable stablizer it worked ok...and i got to be the recipient of her first quilt!