Feddersen earned his Bachelor of Fine Arts in printmaking from the University of Washington in 1983 where he studied under artists Michael Spafford and Glen Alps.
They incorporate printing techniques and the addition of staples, pins, mirrors, oil pastels and acrylics o achieve a rich surface quality white retaining luminosity of previous layers.
However, his first major work was "Rainscape"; a series of lithographs that were exhibited at the Heard Museum's 3rd Biennial Native American Fine Art Invitational.
[1][6] In the early 1990s Feddersen created a series of monoprints based on blanket designs of the Plains Indians and Pendleton Woolen Mills.
The geometric patterns represent designs seen in Colville basketry and cornhusk bags, while the complete series expresses Feddersen's desire to reflect on his communities traditional culture and his modern art background.
Drawing influence from designs seen in Plateau Indian art, he creates artworks showing repeating patterns, leaving them with titles such as Cul-de-Sac, Scaffolding and Tire, a critique on contemporary life with a touch of tradition from Colville basketry.