My best tip: use the tacky tape on the bagging film and leave the separation film on it for now. Than attach it to the mould, starting with the edges. Only remove the separation film where you are working. put down the middle of each edge. Maybe shift it a little, if the part isn't symmetrical and you need more film on one side. Than put down the middle of each remaining section. Repeat this, till you are down to about one point every 10cm. Remove the separation film from each remaining section separately, and make a pleat out of the section. This will happen automatically, so no needs to plan ahead, or problems with getting the tape into tiny pleats. Far easier than attaching the tacky tape to the mould imho.