Public figures are often accused of being two-faced. When Abraham Lincoln was accused of being two-faced he replied, "If I had two faces, do you think this is the one I'd be wearing?".
Today we are going to expose two-faced politicians and celebrities, similarly to how it's done in the example (Madonna + Julianne Moore). Note such details in the example: one flipped face (on top) includes the eyes, while the other (lower) face is taken from another celebrity. It's up to you whether/how to include the eyebrows. (In such setting eyebrows kinda look like bags under eyes :) )
Don't forget to include the celebrity names in your titles or comments.