I tried making one once too. I had wanted to do paper tape, but couldn't find the correct kind. It seems that stores around here no longer carry the kind that you wet with a sponge. :/ So duct tape it was... and the t-shirt I used under it was all wrong, and we were having trouble getting the tape on there correctly, so it was scrapped. Either way, I'd be hesitant to make either again, especially for sewing. Applying them to the outside of your body means that they'll be slightly larger than you actually are. It's not such a bit problem if you're using it for knitting, but if you're making clothes with very little ease...