His technique shifted from the delicate methods of Japanese woodblock printing to a much more vigorous style of oil painting. In works like The Piano and Still Life (with Milkweed), Nordfeldt used a palette knife to apply thick layers of pigment. He often favoured muted tones and heavy outlines to define his subjects. His compositions, such as Landscape with a Train, demonstrate a preference for flattened space and rhythmic arrangements over realistic depth.

Modern collectors value Nordfeldt for the graphic strength of his images. His ability to balance representational subjects with modernist abstraction makes his prints versatile for home decor. The starkness of his later style provides a sense of calm and order. These works offer a sophisticated alternative to more traditional representational art, fitting easily into minimalist or mid-century inspired rooms.