Three point lighting is set up by using three sources of light, the front light, the back light and side light. The front light is the main source of light, the back light is suppose to make the model stand out, and the side light controls how much shadows/fill is visible.
The reason I think that this is my personal best is because of the contrast between light and shadow. The broad lighting was well executed in this image. I also think that the angle of the image is brilliant.
Luis Lopez