I took advantage of my visiting relatives.
One of my cousins, a particularely cute one, made a very good model. Out of 193 pictures of this wiggling 4-year-old, I shot about 3 good ones.
Im not sure if they're painting/drawing quality.
Photo #1" Has good posture (i think!), with one exception that I can see: Her right arm is parellel with her right leg, creating some confusion when you first look at it.
Photo #2: Her mother loves the expression, but I don't think the back lighting is good. --- I had to take the kitten out of her arms before the Animal Rights Association showed up at our door.
Sorry: The photos lost some quality after adjusting it to fit the board requirements!