Cossio’s principal tool for painting is an airbrush, which sprays the paint onto the canvas and allows for the seamless blending of pigments. This blending allows Cossio to achieve high detail and precision found in his elaborate works. By using an airbrush instead of a standard paintbrush, Cossio changes the function of a tool originally designed to retouch photographs into the primary means of creating a photorealistic image. In each of his compositions, Cossio experiments with the human form and its ability to convey emotion in functional, minimalistic interiors. Many of his works echo those of the New Realism movement, conjuring an atmosphere in which the figure is derived from reality but the other elements are fabricated, obscure, utilitarian yet unexpected. Cossio pares down the environment in which the figure is placed so as to direct all concentration on the figure. Though Cossio works in a hyperrealist style, his scenes are set apart from the reality of day-to-day living. Cossio states, “I create images starting from a contradiction. I am a painter who does not want to paint reality. I want to interpret it with all the means that are at my reach.” His interpretation of reality is one of appreciation for the beauty, the emotion, and the paradoxes of everyday life.
" For me making art is something inherited, natural. I was always a good draftsman, it´s like breathing. It´s a necessity to express my ideas through painting and to see the world around me with an artistic point of view. Beside is the real aspect: I´m an artist; it´s my job and I have to make a living from this; that´s why I make art. "