This to the left, is a painting by Julie Ford Oliver (link) that illustrates her "fracturing" technique. You can get her video tutorial where she demonstrates this technique for only $15 from Daily Paintworks (link). I have watched it many times and continue to learn from it. Our exercise was adapted from her tutorial.
Our subject was a strawberry. We used our exercise canvases. None of these surfaces move paint very well. Therefore, we put a fairly thick layer of paint mixed with medium all over our surface. Using a mid or light value color was more successful than using a dark color for this step. We then used our wipe out or Kemper tools (link) to drag paint off the surface and create interesting random marks. These were both thick and thin lines. Next, we sketched in our strawberry using either the Kemper tool, or pastel pencil. Now, we painted the little painting. Everywhere there was a line, we pretended it was the border of a mosaic and changed colors. For example: in painting the dark strawberry flesh we could paint alizarin crimson and magenta. At a line, change to alizarin crimson and purple (still dark but a change in color). Once the little painting was completed (including the background), we took the Kemper tool and created new lines (or redrew lines that we liked and wanted to repeat) and dragged the strawberry color into the background and the background color into the strawberry. Them we repainted our strawberry composition, again altering colors at the lines. If some lines didn't work for our evolving painting, we painted over these.
This was fun for everyone. We stopped after these two passes. However, we saw that we could continue adding more layers. All of the little exercises were delightfully loose and interesting.
Here is mine: