1955 – 1960 Drawinglessons, school of arts, by Herman Filott, Heerlen
2003-2007 Monoprinttechniques by Béa Verheul, Atelier M22738, Ruurlo
2005-2010 Drawing and painting lessons by Sabine Jahnke in Heelweg
2007 Masterclass Kon. Talens in Apeldoorn
2008-2013 Several art courses, by Michael Bause and Renate Meinardus in Arnsberg (Germany)
2010 Workshop by prof. Yuri Wassiljew (St. Petersburg) in Ahaus (Germany)
2012-till now Drawinglessons in Rhineland-Palatinate (Germany)
2013-till now Painting courses at Freie Kunstakademie Augsburg (Germany)
2017-till now Painting courses by  Stephan Geisler, Bochum (Germany)
Curator exhibition Stadtgalerie Sundern (D), Robert Süess (CH) and Andrea Rozorea (Augsburg).
Heleen Posthumus schilderen in de Pfalz 2013