Hi!..Dan, you ask about techinques, mate l truly dont have any,its mainly down to your emotions and what you as a person can suck from the drawing,and putting your self in the drawing.Funny but photos dont work for me in any way,painting and drawings are what gets my old brains juices flowing, reading and music help for me, heeps! play the same song over and over while working especially emotional music,perhaps it flicks the switch on as most of the time lm operating as my family say in rest mode or Noddy world..
Done a few from pictures, but l never stick truly to the drawing its as l,ve said its what you suck from the picture and then how you see in your mind the finished piece.One small thing dont look at your drawing from one dimension try looking from another point in your minds eye....well perhaps l do have a techinque after all, the same gose for a straight forward sculpt put your self in your sculpts place,..
Many perhaps will say what a load of bull dust phil talks but thats how it is for me, and somtime it works Dan.....phil..