The practice fabric I had is actually much thicker than the chiffon I'll be using but in general it worked. And, the flounce around the neck will probably not be nearly as voluminous as it is on this muslin. I ordered some fabric from Thai Silks for both the lining of this dress and the wedding dress so as soon as it arrives I can start on the real deal.
Side note - in an effort to ward off a full bout of "senioritis" and the ensuing sub-optimal academic performance, I've imposed some self limits and will work on/post about the wedding dress on Wednesdays and the B&W dress on Fridays. No class on W and F = no school work period, in my opinion.