Her specialty is using leather to create meticulously crafted, hand-sewn paintings of places. She prefers patent leather, a non-breathable fabric that fits with her representations of cultivated but often stifled environments. From 1995 to 2000, Janssen studied at the Design Academy Eindhoven. Janssen’s first international solo exhibition occured in Florence, Italy in 2008. In 2012, the Dutch artist had her first solo retrospective at Gemeentemuseum Helmond, Netherlands. Her work has been represented by Cokkie Snoei gallery in various exhibitions and international art fairs. She received three grants from the Netherlands Foundation for Visual Arts, Design and Architecture. Janssen is also an art teacher at the De Fotovakschool in Rotterdam, and a guest teacher at The Royal Academy of Art in The Hague.