The Sky fall poster is a fully mono-chrome (black and silver) this adds a classy element to the film and ties into to image of James bond which is one of a class British gentleman. The backdrop is of central London with  iconic building likes parliament and big Ben clearly visible. They have chosen the British government building instead of another tourist attraction as he is famously a agent of the British secret service; with the British flag waving in the background at full mast for a bit more Britishness. He is leaning on an Aston martin which is a famous British car company that make very expensive fast cars, the fact that he has one shows he has money. He is wearing a well tailored suit and tie which is internationally known a the successful businessman or spies uniform the small gun he is holding is the indicator that he is dangerous.