Things to consider-
make the play-doh thinner before shaping it
Put maybe a cloth or tissue over the eyes so then salt (from the play-doh) does not get into your eyes.
We should have not spent so much time on the shape so we could complete the mask.
We should've pushed the play-doh against the skin more so we could see the features more clearly.
The play-doh was a little damp so we should've waited for it to dry more.