Sure thing. I tried something different and did silicone negatives. Probably wouldn't do it again for something like this, but it was interesting. Not pictured are the brow (done as a flat mold) and chin (done like the others).
Ah I see, thanks
The reason I ask is that I'm making something similar to a prosthetic for my project, its the mix of hard & flexible half's of the mould that interests me. It would be easier for me to use silicone for my project so its nice to know it'll work