Positive space is the area filled with elements in the design and negative space is empty or open space left between the design elements, such as the background.
CN

The space Arthur Boyd has created in Hanging Rocks with Bathers and Mars, 1985 draws the audiences' attention to the empty space which is in this case the Shoalhaven River as the hanging rocks frame the open space.

Aboriginal Children and Windmill (1960) = 
In this painting Arthur Boyd uses different colours to show the mood and emotions of the children playing around.  Also you can see he gradually changes the blue in the sky from dark to light this is known as a value (The lightness or darkness of a colour)

Oil on canvas, 100.2 x 120 cm
The composition is bisected horizonta

 

The major element in art that creates harmony is colour, hence Arthur Boyd’s Peter's fish and crucifixion, 1993, oil on canvas used the primary colours of blue, red and yellow. The use of basic colours is a form of element, which makes the painting in tune with one another. Painting the warm colours in the centre of the painting creates unity and connection between the mountains and the river. The colours used in the fish and the background complement each other, which in contrast create a feeling on completeness. 

1993

Taking a closer look at form illustrated in Arthur Boyds canvas painting, ‘River bank and four rocks’ the viewer sees the formation of depth. Both in the physical thickness of the paints once they dried and the depth illustrated through the paints, creating the illusion of highlights and shadows and objects such as the rocks. This canvas is 152.0 x 122.0 cm stretcher; 155.5 x 125.0 x 4.5 cm frame and by doing so Arthur Boyd created immense focus on the texture, colours and depth of the oil paints used. The size of the canvas is a creative choice that encompasses the term ‘form’ in artworks. Boyds chosen medium in this particular artwork is oil paints that were painted on with his hands and brushes.