This video shows how to paint Piet Mondrian inspired block print nails yourself. Apply a white base coat and top coat. Use black nail art paint because of the thin brush. Paint two black lines the length of your nails. Then paint black lines going across the width of the nails to make random size boxes. Dab the color of paint you are going to use on a piece of paper and use the nail art brush to get the paint off of the paper and apply the different color paint to the boxes. Wait about 10 minutes before applying the top coat.