In 2006 she published her first comic album entitled Project: Human, published by Kultura Gniewu, a well-known comic book publisher in Poland. Her short comic were also featured in a comic book about the war published by the Warsaw Rising Museum under the title 44 (2007). She also began exhibiting her works around Poland and Europe at various illustration showcases and in 2010 she co-curated Poland’s first illustration biennale – Ilustracja PL 2010 – which opened in April that year as a part of the KTR Advertising Festival organised by Stowarzyszenie Komunikacji Marketingowej SAR.
After the success of the first edition of Ilustracja PL, SAR together with AdArtis Foundation repeated the format in 2012, inviting a larger number of artists to participate (more than 100) and presenting a broader range of styles, forms and media from Poland’s youngest talents. The exhibition, co-curated by Anna Zimecka, Przemek ‘Trust’ Truściński and the Illo agency was titled ‘O-kupować’ / ‘Occu-buy’, meant to represent the ‘occupation’ of the viewer’s imagination by the artist by way of contemporary themes, social media and new technologies.
She is involved in a number of commercial projects as well, such as her design project for Empik cafes interiors and merchandising, which today grace the walls and cups of each Empik location across the country. In an interview with Dazed Digital, she said her work is about ‘contradictions: loneliness and other people, motherhood and non-conformism, modern and the old school’.
The Wybalansowałam (Balanced, 2015) exhibition in BWA Tarnów presented both paintings by Zofia Stryjeńska from the Tarnów collection and new illustrations by Agata‘Endo’ Nowicka inspired by Stryjeńska's work. The exhibition's axis revolved around texts by Angelika Kuźniak, who wrote about Stryjeńska's extraordinary and, as it turns out, extremely modern life in a biography entitled Stryjeńska: Diabli Nadali (Stryjeńska: The Devils Gave). Zofia Stryjeńska's original paintings were enriched by Kuźniak's words. The artist's interwar life included everything: talent, hard work, destiny, great love, painful betrayal and lonely motherhood; both successes and failures, splendour and poverty.
The eponymous ‘balance’ comes from Stryjeńska's notes and ironically refers to the ‘balance’ that the artist often lacked in her adventurous life; however it can be found in her art – coherent despite its diversity, richness and originality. The paintings and texts were complemented by Agata ‘Endo’ Nowicka's illustrations, which drew not only from Stryjeńska's art, but also newly unearthed words and thoughts, thanks to the insightful work of Angelika Kuźniak.
Endo's exhibition entitled I Am The Sea And Nobody Owns Me opened inthe Warsaw bar Pies czy Suka as part of their ‘Ilustrators’ series. The title of the exposition comes from one of Pippi Longstocking’s songs and is a humorous children's motto that AgataNowicka turned into a personal manifesto of a female artist fighting for independence and creative freedom. After more than 10 years of working as an illustrator for hire, Agata‘Endo’Nowicka decided that this time she would show the work that was not commissioned. The collages, sketches and drawings created during the artist's numerous journeys derive from the pleasure and charm of experimenting, observation and chance. At the exhibition you could see works breaking away from computer pixel aesthetics, made with traditional tools such as ink, gold flakes or just a pencil. The exhibition included two-dimensional drawings and collages, but also three-dimensional miniature installations out of trial sketches, paper and frames. The 2015 exhibition I Am The Sea And Nobody Owns Me was the illustrator's last presentation of work before moving to New York City.
In 2018, Agata ‘Endo’ Nowicka,together with philosopher Aleksandra Hirszfeld, released the first Polish sex comic book created by women. Isota (Essence) is a book created out of the need to fill the lack of female narrative in eroticism – a sphere dominated by the male gaze. The comic book depicts an unconstrained woman aware of her desires and sexuality. The authors collected money for the publication of Isotota via crowd funding and invited other artists to collaborate, including the painter Agata Bogacka, illustrator Joanna Short, and cartoonist Ada Bucholc. In an interview with Vogue Polska, Nowicka said:
Our book was created out of the need to feature ordinary women. Most of the heroines of erotic comics have legs up to the sky, a waistline, large breasts and long blonde hair. There is a lack of everyday life in these comics, something that we could refer to or identify with. We wanted to draw women's sexual fantasies, not male fantasies about them. But our book is not only for women.