Thumbnail ParkThe reasons I complete thumbnail sketches: a thumbnail sketch makes the painting process easier regarding perspectives, scaling, value, lights and darks, the rule of thirds, palette and composition. I do take photographs on a regular basis, but in my experience they do not make my mind concentrate on how I am going to create a piece of artwork – a sketch does.  

Once I have completed the sketch I often add a grid, based on the Rule of Thirds, so it gives me further guidance as to how this small sketch is going to fit on a much larger canvas or paper.