£1 Shop plastic skull mask, jaw removed and top of skull trimmed and inverted to hold electric tealight. Thin coating of watered down cheap 'hard as nails for aging texture. Eyes, nose and mouth to be drilled out and/or filled yet. Will replace backing with a half decent oval board when I pick one up. Intend to make it look like a really old and decrepit with more grey tones when painted. Probably make a mold of it and try my hand at casting some.
Test with tealight (poor quality pic I know)