Nightmare with the mask mould!

After all of the technician in the workshops advice about how they thought I should make the mould, I didn't end up putting enough vaseline onto the clay version and when the plaster did actually dry it was really hard to get the clay out, which meant we had to smash the mould off the clay. We tried really hard to recover it, almost like a puzzle but the pieces just weren't making sense! So i weighed up the amount of time it would take me to make a new clay mask and how long to put the plaster mould back together, and it worked out less time and effort to make a new clay mould in the next couple of days ready for when the plastic needs to be ordered... I also decided after advice from the technician that I should use beads or small balls for the bumps on the head, as it makes the texture of the mask more consistent and the plastic is more likely to stretch over the bumps rather than my own home made clay versions. I have basically redesigned the mask all over again. But this time I am a lot more content with my decisions...