HOW TO DESCRIBE A PICTURE:
Step 1) Identify the document
Step 2) Describe the elements in the picture (global > detail)
Step 3) Explain meaning or message and give your opinion

For useful expressions click on this document how_to_present_an_iconographic_document

found at http://englishingambier.over-blog.com/

Remember you have been given vocabulary ” Toolbox ” to help you describe the photograph.