Herrán did majestic paintings of Mexican indigenous people, giving them heroic strength and dignity. In 1910 he participated in the exhibition commemorating the Centennial Anniversary of Mexico's Independence. His figures have been associated with the traditions of Spanish art, particularly the work of Velázquez and José de Rivera, and also the Catalan modernism. Due to Herrán's quality as a colorist, it is not surprising that he occasionally designed stained-glass windows and was a seasoned book illustrator. The ambition to be a mural painter appeared at the end of his brief career, and in 1911 he completed large-scale paintings in the School of Arts and Crafts. In 1912, at 25 years old, he met Rosario Arellano, his future wife. In 1914 they were married and had a son, José Francisco. He died on October 8, 1918, at the height of the aesthetic revival of Mexican art.