How to describe a picture

Here you can find useful information about picture description:
http://www.cristinacabal.com/pre-intermediate/description.pdf
http://www.englisch-hilfen.de/en/words/describing_pictures.htm
http://www.englishcenter.cz/downloadfiles/145.pdf
http://cms.ac-martinique.fr/discipline/anglais/file/picture-description/words-phrases
http://www.slideshare.net/garceral/describing-pictures-in-english-class-11060729

Simple phrases for comparing pictures:
https://en.islcollective.com/resources/printables/worksheets_doc_docx/useful_phrases_to_compare_photographs/comparison-fce-speaking/21636
http://www.autoenglish.org/oralexams/keyphrases.htm
http://www.grammar-quizzes.com/compare.html

Once upon a picture - web page with many pictures and questions that help you to desribe the picture