By Selecting the Smart Stroke Painting my strokes will automatically follow the natural curves of the photo. I will also check Smart Settings. With the auto painting running Smart settings will change the size, length, and pressure of the brush strokes and give areas greater detail.
One of the ways to give your source image a more "painterly" appearance is to vary the size and opacity of the brush strokes from time to time. You can do this at any time during the Auto Painting process. Simply uncheck the smart stroke painting and the Smart settings and refer to the stroke area on the palette. The drop down palette will enable you to select a wide range of brush dabs to apply to your image.
Below this stroke palette you will notice other selections that you can make to your brush stroke such as pressure, rotation and brush size. One of the new features of the Auto Painting palette is new speed feature. You can now increase or decrease the speed in which the brush dabs are rendered on the canvas.