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.