sentences:  Petyarre was introduced to the batik medium at a hippy commune on a visit to Wollongong, New South Wales, and began making her own batik in 1977 with the support and encouragement of the linguist and adult education instructor Jenny Green.Petyarre continued to produce batiks with other women at Utopia until the late 1980s, when, prompted by allergies to the chemicals they were using, she began developing her signature style painting with acrylic on canvas.Petyarre's technique consisted of layering very fine dots of thin acrylic paint onto the canvas, evoking the Aboriginal custom of ceremonial body painting, to carefully construct abstract landscapes that reveal a remarkable depth when viewed up close.