Valeria has been dedicated to children illustration since 2006. In her work she uses both manual and digital techniques and investigates the use of new methods and materials in a constant pursuit of new expressive forms. Her work has been featured and recognized at Bologna Children Bookfair's 2008.
Her book La gran fábrica de palabras, has sold more than 120,000 copies in 20 languages: French, Dutch, English, German, Corean, Spanish, Catalán, Portuguese, Russian, Chinesse, Italian, Slovenian, Norwegian, Estonian, and Turk among others. She currently lives in Lyon, France.