Faces With Expression

I have looked round many amateur artist shows and have noticed that the portraits often show the sitters face without expression.     I have concluded that the model was bored after sitting for so long.     I was not sure that I could do much better, so I set my self an exercise of carving four faces with different expression.   First I made a clay model, and took plaster cast.   I used the plaster to produce 4 faces in clay which I altered until I got the expression.    Then I carved them.  This exercise has always stood me in good stead.

Info:Lime: Height 9 inches