In 1978 she moved to Edinburgh (Scotland), where she became a Council Member of Edinburgh Printmakers, received a Scottish Arts Council Award and in 1981 won the 1st prize at the Biennial Art Competition (Smith Art Gallery and Museum Stirling). She taught printmaking at Edinburgh College of Art, and was a visiting lecturer in mezzotint at the Art Colleges in Glasgow (Scotland), Belfast (N. Ireland), Amsterdam and Groningen (Netherlands). In 1982 she moved with her family to Dublin (Ireland), where she taught printmaking at Dun Laoghaire School of Art and Design. In 1987 she moved back to Edinburgh, and continued to work in the art world as a teacher, Project Coordinator for Arts in Hospitals and Council Member of the Scottish Society of Artists (SSA). From 1992-1996 she also studied English Literature at the University of Edinburgh (MA Hons.).
In 2010 she became part of the SSA steering group for the Polish exchange exhibition Big Print, Small Print and a year later was invited by the Slovakian curator Zora Petrasova to select a Scottish delegation for the exchange exhibition Mosty IX -Bridges IX. This resulted in a very successful collaboration between Scottish and Slovak Printmakers with several exhibitions in Slovakia and the show Slovakian Master Printers in Edinburgh. In 2011 she was shortlisted for the Prize for Originality and Breaking Classical Boundaries at theI International Mezzotint Festival (IMF) in Yekaterinburg in Russia, where she was invited back as a member of the Jury in 2015. She was awarded the title International Mezzotint Ambassador at the III IMF.
For many years Nan Mulder had been travelling with the Dutch printmaker Gea Karhof. They visited together Mexico, Guatemala, Honduras, Thailand, India and Nepal. In 2007 they established the group Double Vision. Initially together with two Nepalese printmakers, but later including also two printmakers from Pakistan. They exhibited together in Scotland, the Netherlands, Nepal, Pakistan and Belgium.
In 2013 she moved back to the Netherlands and joined Grafiekgroep Bergen, a group of ten printmakers. Since 2005, as a regular visitor to New Zealand, she had joined the Print Council Aotearoa New Zealand (PCANZ) and decided to bring members of both groups together. Thus she became the curator and main organiser of the exhibition Distant Kinship. This very successful show opened in 2019 in Museum Kranenburgh (Bergen, NL) and is at present travelling along a number of museums in New Zealand.
Nan Mulder had solo and duo exhibition in the Netherlands, Scotland, Ireland, Belgium, New Zealand and China. Her work has been shown in many international biennial/triennial exhibitions all over the world. She attended artist residencies at the Tyron Guthrie Centre in Ireland, the International Graphic Symposium at Castle Mojmirovce in Slovakia and the ZairaZaka International Print Residency in Islamabad, Pakistan. She is also a regular contributor to the UK magazine Printmaking Today.