Carmen has illustrated The Nest in My Branches (Das Nest in meinen Zweigen, arsEdition, 2026), a poetic board book for children from 24 months, written by Anna Taube. Told from the perspective of a tulip tree, the book follows the changing seasons, the birds and creatures that make their home in its branches, and the small wonders of the natural world across the year. Carmen's illustrations have drawn widespread praise, described as "beautiful, delicate and true to nature," and the book is a SPIEGEL bestseller. A truly lovely project, and a wonderful example of Carmen's ability to bring warmth, detail, and quiet storytelling to every spread.