His experimental series of works, which bear visible traces of spontaneity and intuitive action, are also noteworthy. The most recent series "Painting", which is strongly reminiscent of Gerhard Richter's large-scale spatula works, cannot be overlooked. He respectfully analyzes: "Richter has influenced me in a special way, he inspires me in my daily work as an artist."

Seine abstrakten Kunstwerke vereinen scheinbare Gegensätze zu außergewöhnlichen, harmonischen Bildkompositionen. Der Dialog von Abstraktion und Konkretem, Licht und Schatten kombiniert mit einem ausgeprägten Gespür für Linien und Formen lässt Werke entstehen, welche durch ihre natürliche Ästhetik ihre allegorische Aussagekraft bestechen.

Wittkowski's contemporary painting is particularly captivating with its fascinating colour compositions. Her subjects seem to follow the laws of nature. Wittkowski seeks out phenomena in the plant kingdom that can only be perceived and felt on closer inspection.