She later became a storyboard artist for Warner Bros., Marvel and Disney Television, and variously worked as a production designer, art director and co-producer". In the early 1980s, Jenson worked on the storyboard backgrounds on the He-Man and the Masters of the Universe cartoon series for Filmation. She was also a design and color stylist on Mighty Mouse: The New Adventures, the influential Ralph Bakshi reboot of Mighty Mouse, in the 1980s. She held the same position with The Ren & Stimpy Show in the early 1990s, for creator John Kricfalusi. For both Mighty Mouse and Ren & Stimpy, Jenson was among those "responsible for the development of the visual style" of the series. In 1992, Jenson was the art director for FernGully: The Last Rainforest, and the production designer for Computer Warriors: The Adventure Begins and Playroom.