Photoshop workshop - Photograph reproduction

For the next two weeks. I am going to try to reproduce an iconic photograph of Audrey Hepburn. The photographs in question are shown below. 

Out of the five images shown here, I will be choosing the one with Audrey wearing a black polar neck. The reason being is because the image itself is simple, yet striking on the grounds that it almost looks like a silhouette. The person I'm going to choose for this particular photograph is my friend Danielle Levell. The reason is because she looks similar to Audrey Hepburn and is therefore the perfect choice.