He worked as an illustrator for a variety of newspapers and journals including Klods-Hans, Gnisten, Blæksprutten, Ekstra Bladet and Politiken.
Initially, together with Aksel Jørgensen and Axel Nygaard, his sketches were directed at depicting the dreadful conditions for the poor.
His caricatures included cartoons of many of his artist friends from 1909 to 1920, published in Ekstra Bladet, and of Danish and foreign politicians, in Politiken.
Initially his work was inspired by the satirical journal Simplicissimus but he soon found his own style, characterized by the quick, clear lines he used to depict in his cool, unemotional way the changing expressions and typical gestures of the figures of the day.
In 1918, he left Ekstra Bladet to move to Tisvilde where his friend William Scharff also worked, becoming one of the country's most important Cubists.