In this tutorial, we will explore how to create an abstract, painterly effect applied to a head scan model to produce a ghostly looking portrait. In this tutorial, we will specifically use the Standard Surface shader in combination with the Range and Camera Projection shader to produce this effect. You will need a head model for this tutorial. An example of a free to use head scan model can be found here. You will be required to use your own texture for this tutorial. Further examples using this technique can be found here and here.