Myriam Sayalero (myriamsayalero.com) is a journalist and the director of the multiplatform content site Adosaguas. She has had several books published in Spain and Mexico. The most recent are Los regalos de la vida (Aguilar, 2016), Diario irreverente del desamor (Planeta México, 2017), and Poderosas (Larousse México, 2017). Her latest children's publications are ¡Vaya con el día especial! (Alfaguara, 2017) and Diario de emociones (Larousse, 2017). Follow her on Twitter @myriam_sayalero.

Dani Torrent (danitorrent.com) has a degree in art history from the University of Barcelona and studied fine arts and illustration at the Llotja Advanced School of Art and Design. He has exhibited his award-winning artwork around the world, and has been published in many countries. In addition to his work as an illustrator, he has also written several of his own books in Spanish. He has won the Young Creators prize of the Fita Foundation of Girona (Spain), the second-place prize of the intentional drawing festival of Zabrze (Poland) and the second-place prize of the BIISA Festival of Amarante (Portugal). Dani lives in Barcelona. Follow him on Twitter @danitorrent1.