Complex sentence: Miller is often referred to as an "outside artist," self taught and self motivated, she is prolific in various mediums; acrylic paint, sculpting, ceramics, pencil as well as pen and ink.
Split into simpler sentences: Miller is often referred to as an "outside artist," self taught and self motivated. She is prolific in various mediums; acrylic paint, sculpting, ceramics, pencil as well as pen and ink.