Marwood exhibited three watercolours titled The Sleep-out; Creek Bed and The Wheat Field with the West Australian Society of Arts in 1934. In 1936 he won the Landscape competition with a watercolour titled Sand and Shadows and the pencil competition with An Old Warrior. The critic Will Murdoch wrote that “a seaside impression by Gordon Marwood, shows a delight in colour and a praiseworthy delicacy and restraint of treatment” (Murdoch, 1936: 20). He exhibited in the 'Exhibition of Western Australian Painting from 1826-1937’ organized by the Perth Society of Artists.