Test takers should make sure that they complete the task carefully and provide a full and relevant response. They should organise their ideas clearly and make sure to support their argument with relevant examples (including from their own experience where relevant) or evidence. For this task, test takers need to be able to communicate more abstract and complex ideas and use a range of vocabulary and grammatical structures. Task 2 contributes twice as much to the final Writing band score as Task 1. Therefore, test takers who fail to attempt to answer this task will greatly reduce their chance of achieving a good score.
Is it a historical photograph or a photograph published in a book that someone scanned and posted on line, is it a photograph of something like a sculpture? Is your paper focused on the work of the photographer, the makeup artist who prepared the model, the digital image enhancer who altered the image, the model? There is no single correct way to cite a photograph, because there are many different reasons to cite a photograph. Your instructor would be able to give you more specific advice. In general, though, the 8th edition of the MLA guide would say something like this: