Nice Face!

So, the Weeping Angels have big scary faces when they're going to get you.

In the actual show, the masks were latex, and were applied before the latex wigs were put on. I feel like I could do latex casting, but 1) I've never done it before, 2) it's kind of expensive, and 3) I don't have a lot of time.
We joked about using this mask available for download from the BBC lol:

But we decided that a better route would be to make a plaster mask then sculpt on top of it.