Complex sentence: The artist then uses a palette knife or oil stick to scratch out a design, leaving behind an image in the color of the first coat of paint this can also be achieved by using oil pastels for the first layer and black ink for the top layer.
Split into simpler sentences: The artist then uses a palette knife or oil stick to scratch out a design, leaving behind an image in the color of the first coat of paint. This can also be achieved by using oil pastels for the first layer and black ink for the top layer.