In 1930, she joined the newly established Haandarbejdets Fremme (Danish Handcraft Guild), where over the next 65 years she created hundreds of mainly cross-stitch patterns.
Her artistic talents were developed at the Tegne- og Kunstindustriskolen for Kvinder (Arts and Crafts School for Women) under Margrete Drejer and Gunnar Biilmann Petersen.
[1] In 1930, Winckler gained employment at the newly established Danish Handcraft Guild where for the next 65 years she created hundreds of embroidery patterns that were widely used both in Denmark and in countries such as Germany, the United States, and Japan.
They were intended principally for decorating the home, consisting of wall panels, tablecloths, and Christmas items, but they also covered handbags finely embroidered in silks.
[2] Later, much of her work was more freely designed, as she began to create simpler patterns, especially for cross stitch which became popular after the Second World War.