I recently tried to make a chiffon dress using tissue paper as a stabililzer during sewing. I tore the tissue paper away after making the seams. This method DOES give you perfectly smooth, flat seams, but it is very messy and very time consuming. I was making a dress that had miles and miles of seams (don't ask). It was just such a miserable experience that after a while, I couldn't face it. I finally threw away the fabric and pattern to free myself to work on other projects.