Robert Spooner prefers oils as his medium of choice for painting, and his style has evolved from traditional oil painting techniques to a more intricate and layered approach involving oil, plasters, and waxes on fiberboard. His creative process is additive and destructive, taking several weeks to complete each piece. According to Spooner, an "obsessive curiosity" drives his work forward, emphasizing the importance of self-motivation and drive in creating art. He believes that art should be created for the sake of the process and not solely for financial gain, with selling the work being a byproduct of the process rather than the main motivation.