The main thrust of Petra Kaminen Mosher's work is the abstraction of natural forms: landscape and the flora and fauna within it, and the human figure. Through the primary mediums of oil and acrylic paint on canvas, she deconstructs images into elemental colours, shapes and values making way for a landscape or portrait with new colour and value relationships which are best described as lyrical abstraction. She has been referred to as a colorist and neo-traditionalist.