Step 5: Hardening your mask.
Now you have to find a good recipes for the final covering.
I used raw white flour (1 cup) mixed with the previous 50/50 PVA glue (1 cup). It's important to add some kitchen salt as a fungicide to prevent mould developement.
Brush it over the mask 2-3 times.
Let it dry well , and you have done it.