I finished posting the pictures of the VII Concurso de Modelismo Estático, Ciudad de Leganès (Madrid, Spain) of March 11-13, 2013.
Among the 1000+ figures and models exposed, 23 flats painted with acrylics.
http://www.intflatfigures.org/index.php?action=gallery;cat=117
(https://i58.servimg.com/u/f58/19/31/59/25/le70211.jpg)
Pïctures were taken and graciousely authorized by Francisco Javier Ruiz González.