Mattias de Leeuw is a Belgian illustrator and writer whose books have received the Flemish Boekenplum award and the Dutch Golden Palette award. He is the founder of the Drawing Factory, an Antwerp-based creative hub that offers classes for artists of all ages. Later, When I’m Big is his North American debut. Follow Mattias on Instagram at @mattiasdeleeuw and visit his website at mattiasdeleeuw.com.