Okay, so I got the blouse cut out of the silk and lace. Step one was to figure out what to do with the lace, precisely, because it turned out I didn't have enough to make up the full yoke/front, yoke/back panels, plus the collar. SO what I decided to do is cut only the collar and the curved part of the yoke out of the lace, and make the rest of the blouse out of the silk.