For my movie poster for 'Thor: The Dark World', I did not make Thor the first thing you see. I felt like Odin should be the biggest and in the background, since he's the oldest and the father. Then, Heimdall was off to the side, but also bigger than most of the other characters. I made the rest of the characters about the same size, and I put Thor and Jane close together since they're in a relationship. In the background, it's nothing exciting but I felt like it would fit the picture. I wanted people to be more focused on the characters than what's happening behind them.